The correct answer to this question would be alternatives A)"he taught that people should find their "function"." and C)"Alexander the Great was his pupil."
Aristotle was a Greek philosopher and scientist that lived from 384 to 322 BC. He is considered one of the fathers of western philosophy, and has contributed a lot to our way of thinking.
Function is related to "the final cause" or "Telos", which is the purpose or reason why a thing exists or is done.
Aristotle did have Alexander the Great as a pupil, and we can see his influence over him in his bringing with him on his expedition a host of zoologists, botanists and researchers.