1. What do you think verifies the Catholic Church as the true Church of Christ?
it bares the 4 marks of the Church
One, Holy, Catholic, and Apostolic
one, it is unified, with visible and doctrinal unity among its members
holy, it preaches an unadulterated gospel and
catholic, it is for all peoples at all times
apostolic, it clearly is linked to the Church of the Apostles both by historical pedigree and by doctrine
historically, there are few churches that could possibly be The Church
the presence of the Papacy, something that you can see is present in the early Church, and it is retained in the Catholic Church
2. What is your ultimate source of belief in such?
history
nothing has changed the world like Christianity
nothing has changed individuals like Christianity
from the Apostles, to today, people have been transformed by Christ, the fact that all but one of the Apostles died for Jesus, and the survivor, John, lived a harsh life of exile for Jesus, makes me believe that they were telling the truth
so we start from the idea that these men are honest, then we go back to my first answer to find what group these men founded
3. What is your position on the authority of Scripture?
the Scripture is true, but I am not comfortable with calling it an "authority"
like we have the Constitution in the USA, a relatively short document written about 220 years ago in a very straightforward manner, and we have tons of lawyers and politicians arguing about what it means, how to apply it, all that
now we have the Bible, a collection of many books written in many different styles by different authors over the course of hundreds of years, roughly 1900 years ago was the newest books, with the oldest being written 2600 years ago, in hebrew and greek....
so the Bible is true, but it can not be an authority, you would need an interpreter and that person would be the authority, if the interpreter is you, well then you are setting yourself up as your own authority