Concept:A storage pest damages harvested food grains or products while they are kept in storage.
Explanation:Weevils attack stored grains such as rice, wheat, and maize.
They feed on whole, healthy grains and multiply quickly inside storage containers.
Yam beetle damages yam in the field or during growth, not mainly in storage.
Capsid and army worm are crop pests that attack living plants in the farm.
Therefore, the correct example of a storage pest is the weevil.
Answer:D. weevil.