Q. 1. Underwater divers wear fin-like flippers on their feet to (a) swim easily in water (b) look like a fish (c) walk on water surface walk over the bottom of the sea (sea bed).

• Solution:
• : swim easily in water

Divers while swimming wear fin-like flippers on their feet because the muscle in the feet contracts, generating a curve on one side like a wave and the fin-like flippers move on the opposite direction exerting force against the surrounding water that push the underwater divers forward.