There is no vague pronoun reference in that sentence.
The pronouns in the sentence are:
Aristotle enjoyed studying motion because he really enjoyed learning about why different things worked.
He was interested in computers, so he enjoyed studying the networking module. Computer networking is very important in modern technology.
Enjoyed and lasted are the verbs. 😊
I enjoyed our conversation last night.
I enjoyed renouncing the book for the elementary kids today
Enjoyed and lasted are the verbs. 😊
Example sentence - We enjoyed the summer in New England.
He enjoyed his soccer game.
Example sentence - We enjoyed the parody about fairy tales.
The one noun in the sentence is bus.
Example sentence - He changed his major to meteorology and enjoyed it immensely.
His Porpoise enjoyed fish.