Step 1: Understanding the Concept:
Cover and Plinth (CAP) is a scientific, low-cost outdoor storage method designed for temporary preservation of massive food grain bags.
Step 3: Detailed Explanation:
In CAP storage:
1.
Plinth: A raised platform (usually made of concrete or brick) is constructed about 30 to 45 cm above ground level to prevent moisture entry from the soil.
2. Grain bags are stacked systematically on this plinth.
3.
Cover: The stack of grain bags is covered with a waterproof, UV-stabilized black polyethylene cover and secured with ropes to protect the bags from rain, wind, and pests.
Thus, CAP is exclusively a storage technique.
Step 4: Final Answer:
The correct option is 2, which corresponds to Storage.