Another option is for the family to consent to the removal of life support, allowing the person's life to end sooner.
My question is: Would the second option be considered a form of intentionally ending a human life?
Ah . . . yeah . . . I guess so. But there is the question about how much God would have us using resources to keep ourselves alive. Plus . . . by the way . . . God already know what is really going to happen; and He has planned it.
But, practically . . . first, I would pray so I am ready for what God has planned . . . that He knows is really going to happen.
Also . . . not always do people die when they let go of themselves, medically.
I would say pray and trust God to guide you.
Pray for ***honesty***. Because people can rig things to make their situation look the way they want you to see it.
There can be a person who claims to be a Christian, but the person has been doing things for years, even decades, to abuse oneself so the person comes to a very painful state. Well . . . the person wants to die, and all of a sudden asks you for your opinion or approval . . . maybe after not listening to you and/or others for decades about how the person should not have been abusing oneself. Well, you don't have to answer to that. If you had some real say, you and/or others would have told the person not to abuse oneself, medically, for years. But the person would not listen, but now all of a sudden the person acts as though you have to give your opinion . . . and the situation has been rigged to make it look like you have to agree with the person. In fact . . . in my opinion . . . in such a case > no, you do not have to make any judgment. The person arranged to get into that situation, and no you do not have to get involved in that.
Like this > I know people who have lived for themselves, right while making quite a righteous show of being Christians. And now they are horribly miserable, and they might try to make me responsible for their being happy enough to stay alive!! And am I going to tell them their pain excuses them to die? No. And ones will say I am not comforting them the way I should. Right!!
Pain does not decide things, I would say. But this world is so about pleasure and convenience and comfort. So, worldly people can tend to rig things for avoiding pain . . . after they might have taken action to make sure they would suffer. In the case of such trickery . . . no, you do not have to try to satisfy them with what they want, after they have actually arranged to get into that situation!
And in case you have not had opportunity to really get to understand someone . . . my experience is they will already have people who are working along with what they plan to do. And so, I would be careful, prayerfully, about getting involved.
But what if someone is suffering innocently? In my case, I would want to simply obey God and He would guide me and give me the strength and right attitude so I would do what He pleases. What might matter to me is I would not want people to spend a lot of money just to keep me alive. I might talk with professionals about what is available, and what they want to do. But most of all pray so I get what God wants. I might stay a while so anyone may talk with me. But if I become more or less a "vegetable" . . . maybe I would not try now to control what others will do, but leave them free to do what they see fit, and they will answer to God.
Each person is different . . . of course! If you have been trusted with someone's choice . . . you can choose if you accept that responsibility. And, as I offer, there are ones who are not honest, and they can fix things in order to control and steer you, and you do not have to let yourself get involved with that.
But in case we are talking about a clearly honest Christian who is suffering . . . the person should be honest enough to make sure with God about what to do; so it's not on you to know and decide, unless you are sure God wants you involved.
With my lady friend, I encourage her not to be in a hurry to die, because there are people here for her to love. And I have talked with a relative, and I said she seems able to keep going for a while; so in case something happened to her > do not be in a hurry to let her go. So, may be there could be some intense pain, at some point, but I would not let that excuse her for convenience . . . especially if there is reasonable medical ability to bring her out and even to more healthy and comfortable life. But in case she is suffering a lot . . . I would test it, not push her one way or the other.
Our Apostle Paul suffered a lot, didn't he? So, he could have welcomed just dying. But here is what Paul says >
"For I am hard-pressed between the two, having a desire to depart and be with Christ, which is far better. Nevertheless to remain in the flesh is more needful for you." (Philippians 1:23-24)
And Jesus could have just died, without suffering. But He even put Himself in the situation where He would go through all that. And now Jesus can use His experience to feel for us and now bless us with the grace which had Jesus doing so well, during all His things of His life.
So, I think of this > beware of how this world can train your attention to thinking about things of pain. Don't let the issue put you to the test, but you put the issue to the test, including about who is behind that, trying to control your attention, perhaps.
"Test all things; hold fast what is good." (1 Thessalonians 5:21)