You know you for certain can get out with time to spare,
If you can get out with time to spare why would there be no opportunity to save the one that has already entered the world and those awaiting entry?
There is no one else around so you cannot count of someone else bringing the other with you.
Darn those isolated fertility clinics with their lack of staff!
Your options are a 2 year old child who is trapped under a beam you can easily move
A random two year old all alone in a fertility clinic? Ok. I can roll with this. Why did the beam fall? If the beam has fallen the fire must be quite close or the building damaged due to other things.
or a Petri dish recently removed from the freezer that contains 5 embryos.
Of which, should the procedure follow through, may or may not all survive anyway.
Which do you take with you as you exit the burning building, knowing the other will certainly be destroyed?
The child may be suffering from smoke damage and a few broken bones/bruises but they have been born, saving that child allows it a future however long God decides that future should be. This child, if conscious, may be in pain, confused, fearful. They have developed into a human being with all the senses and feelings that come with it, to not save the child would be cruel. Leaving any animal, human or otherwise, to die trapped under a beam would be cruel.
The embryos face an uncertain future, the treatment may be successful, they may all survive, they may all fail to implant. They have no experience of life, they are just starting to develop. Presuming they're the usual 3-5 days into development before implantation then they look something like this
When faced with the option of saving an 8 celled embryo or
It would take some very harsh thinking to take the little petri dish rather than the child.
Edit: even an embryo in their fifth day of development looks like this
The child is still the first choice at this point.
As a note i'm pro-choice, but this question doesn't really show anything conclusive about any pro-lifers.