Classification — pest and target: choose the pair that is factually wrong.

Introduction / Context:
Three pairs correctly link a pest to what it commonly damages. One pair is incorrect: aphids attack plants by sucking sap, not paper.

Given Data / Assumptions:

• Moth : Wool → clothing moths damage wool.
• Termite : Wood → termites damage timber/wooden structures.
• Locust : Plant → locust swarms devastate crops.
• Aphid : Paper → incorrect target; aphids infest plants.

Concept / Approach:
Validate each pest→target based on common biology/agriculture facts.

Step-by-Step Solution:

Verification / Alternative check:
Garden references list aphids as plant pests (leaves/stems), never a paper pest.

Why Other Options Are Wrong:
They show well-known pest damages.

Common Pitfalls:
Confusing paper pests (e.g., silverfish) with aphids.

Final Answer:
Aphid : Paper