Fill in the blank with an appropriate Question Tag:

You think this is funny, _____?

don't you

The correct answer is Option (4) → "don’t you?"

A question tag follows these rules:

1. If the main clause is positive, the question tag should be negative.

2. If the main clause is negative, the question tag should be positive.

In this case, "You think this is funny" is a positive statement, so the question tag must be negative: "don’t you?"

Thus, the correct sentence is:
"You think this is funny, don’t you?"