Select the most appropriate idiom to fill in the blank.
A lot of people are still ______ over the GDP issue.

Correct option is C

Option (c) is the correct meaning of the given idiom.
Idiom: Sitting on the fence means being undecided or not choosing one side in a dispute or decision. It refers to someone who is avoiding making a firm decision.
Example: Many voters are still sitting on the fence and haven't decided whom to support in the election.
Other related idioms and their meanings:
· Beat around the bush: Avoiding the main topic
· In two minds: Unable to decide
· Cross the bridge when you come to it: Deal with a problem if and when it arises