Choose the sentence that uses the correct question tag:

The correct answer is Option (4) → Nothing tastes better than Maa’s aloo paratha, does it?

Question tag after “nothing”:

“Nothing” makes the sentence negative, so the tag is positive. In the tag, “nothing” becomes “it”. “Tastes” has no helping verb, so the tag uses “does”.

Why the Other Options are Incorrect?

Option 1: Kiran posted the rakhi to her brother last week, doesn’t she? — Incorrect. The given sentence says “posted”, which is in the past. “Doesn’t” is present, so the tag must use “didn’t”.
Corrected: Kiran posted the rakhi to her brother last week, didn’t she?

Option 2: This bus isn’t going to the airport, isn’t it? — Incorrect. The sentence has “isn’t”, so it is negative. A negative sentence takes a positive tag.
Corrected: This bus isn’t going to the airport, is it?

Option 3: Don’t touch the wet paint on the gate, won’t you? — Incorrect. An order that begins with “Don’t” takes the tag “will you”.
Corrected: Don’t touch the wet paint on the gate, will you?