Woollen clothes are used in winter season because woolen clothes

Woollen clothes are worn in winter, Why?

Woolen clothes keep us warm during winter because ____

Give reasons. a) Woolen clothes are worn in winter. b) Light cotton clothes are worn in summer.

The woollen clothes keep us warm during winter because : A. Wool is an insulator B. Wool is a conductor C. Wool traps air D. Wool has vacuum