Question

It is useful to follow each main agenda item with​ _____.
a. the time allotted for its discussion
b. subentries
c. the names of the people who will be talking about it
d. the names of the people who will be affected by it

Answer 1

I believe the answer is: A. the time allotted for its discussion 
The main agenda refers to the type of topic that are prioritized to be taken care of in the Meeting.
Time allocation will ensure the discussions are not prolonged more than it necessary. This will make the meeting become much more efficient where the members of the meeting are not talking over each other.