Question

Based on the text below, what would you guess sit on the fence means?
You need to decide between the two projects. Your deadline is next week, so you can’t sit on the fence for much longer.
Avoid making a decision
Avoid something difficult
Avoid someone difficult
Avoid having fun

Answer 1

The best meaning of 'sitting on the fence' is to AVOID MAKING A DECISION.

It is implied from this sentence, that the subject of this sentence cannot make a decision between the two projects.