Suppose you are planning a mountaineering trip and you have to select a cloth (material} for the ground and for a tent to be used for the trip. Which of the following materials will you choose for your tent ?

Correct option is D

The correct answer is (d).
Explanation
A double layered plastic sheet is waterproof, windproof, and provides better insulation compared to a single layer. It also prevents moisture from seeping in and helps retain heat inside the tent, making it suitable for harsh and cold mountain conditions.
Additional Information
• Option {a} is incorrect because cotton absorbs moisture and becomes heavy. • Option {b} is incorrect because wool is not waterproof and is unsuitable for tents. • Option {c} is incorrect because a single layer provides insufficient insulation and protection.