The answer would be, "Characteristics, practices, and customs that are passed down through family, clans, gender groups, or larger cultural groups."
The first one is more of a genetic thing, while the third one shows family heirlooms or such.
Hope this helps! :)
An audience.
This is a minimalist view, but it works as an audience can be considered to be an essential element of theatre.
He finds that she's indifferent to tragedy