Question

what is ddt?
a popular pesticide used during world wars
a pyrotechnic introduced around the 1990s
a natural substance used in organic farming
a wrestling move performed on television

Explanation:

DDT (dichlorodiphenyltrichloroethane) is a synthetic pesticide that was widely used, including during the World Wars, for controlling insects. The other options are incorrect: it is not a pyrotechnic, not a natural substance for organic farming, and while there's a wrestling move with a similar name, the chemical DDT is a pesticide.

Answer:

A. a popular pesticide used during world wars