They complained . . . . . . . . your misbehaviour.

The word "complained" is often followed by the preposition "of" when you are specifying what someone is complaining about.

Think of it like this: You are expressing the cause or reason for the complaint.

* Option A: about While "about" can sometimes follow "complain," it's less direct and usually used when talking more generally.
* Option B: against "Against" means to be opposed to something or someone, which doesn't fit the context of expressing displeasure with misbehavior.
* Option C: to "To" is used to indicate the recipient of the complaint (e.g., "They complained to the manager"). This question is about the reason of complaining and not to whom they are complaining .

So, "They complained of your misbehavior" means they were unhappy and voiced their concern regarding your poor behavior.