Which chemical is present in mosquito repellent

Options :
  1. prallethrin
  2. DDT
  3. BHC
  4. none of these
Answer and Explanation :-

Answer: Option 1

Explanation:

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Sugar, it's no parade but you'll get down the street one way or another, so you'd just as well throw your shoulders back and pick up the pace.
-Barbara Kingsolver The Poisonwood Bible