Saint thomas aquinas was interested in angels because he select all that apply.
a thought that men could become angels to draw closer to god
b wanted to prove the existence of god
c desired to connect his philosophy with the church
d was interested in the chain of the divine

Your answer is a. its the only one to make sense to me to go in the blank.

Ithink it's a, thought that men could become angels to draw closer to god
b, wanted to prove the existence of god 

is basically a good source of getting and others by what you know for example if someone asked a question and you know the answer you could answer it and get some points or if you need on a question you could make a post about it and wait till someone answers it or just look up the question and see if someone else has asked about it