Question

Feathers are useful for

• A. Beauty
• B. Swimming
• C. Proper shape to cut through the air while flying
• D. To keep the body warm at high altitudes

Answer 1

The correct option is D To keep the body warm at high altitudes

• Feathers are epidermal growths that form the distinctive outer covering of birds.
  
• Feathers insulate (keep warm) birds from water and cold temperatures. They may also be plucked to line the nest and provide insulation to the eggs and young. The individual feathers in the wings and tail play important roles in controlling flight.

So, the correct answer is 'To keep the body warm at high altitudes'.