Which of the following would be good things to settle with a group before beginning a discussion?
the length of discussion
how questions are asked
who opens discussion
the topic of discussion
how many times a person can talk
where you will read the material

the topic of discussion

Explanation:

A discussion should be a talk, among peers, that aims to get a better understanding of a topic and to get to see the different angles and sides that a certain topic has so everyone gets to know it better, in this case the first thing to do when you are going to do a discussion, is to select a topic, so everyone can preper and investigate about the given topic.

i would say your answer is a)

sorry if im wrong