frlit1-4, Exercise 1: The rules of classical drama

Model answer (any two):

The three unities: one action, one place and no more than a day, which produced a tight, concentrated drama.
Propriety: violence took place offstage and was reported, and language was kept elevated in tragedy, so the effect came from speech more than spectacle.
Verisimilitude: the action had to seem believable.
The alexandrine: serious plays were written in rhymed twelve-syllable lines, which gave French drama its stately sound.

Check the details against a reference work.