Main idea is what you're looking for.
Answer:
An infinitive phrase used as the object of the preposition on.
the correct answers are 1. ineffective; unanswerable, 2. ineffective; too broad, 3. ineffective; too narrow, 4. effective; clear and complex.
I believe that the work is Marc Anthony's Speech from Shakespeare's Julius Caesar ,and the full line is:
O judgment! thou art fled to brutish beasts,
and his purpose is to say that the judgement is not following the reason, but instead that people follow the wrong people in their judgement (those people is what he means by "brutish beasts")
Parables were commonplace in Chaucer's time, and audiences would have found them familiar.
Parables resembled the teachings of Jesus, with which most audiences in Chaucer's time were familiar.
