posted by josh .
3)_________ CAN OCCUR BETWEEN TWO INSTRUMENTS AND CAN TAKE PLACE AT ANY TIME.
4)A ___________ IS A REPEATED PHRASE.
4. coda is a repeated phrase,
There is not enough information in #3 to help you. I would need to know the context.
I think it might be harmony but there isnt enough information for me to be sure.
Call and response