Classification (antonym/synonym mix): Three pairs are antonyms; one pair is a synonym pair. Identify the odd pair.

Introduction / Context:
Verbal reasoning often mixes opposites with near-synonymous pairs. Here, three pairs are opposites; one pair groups words with similar positive connotations. The task is to pick the synonym pair among antonyms.

Given Data / Assumptions:

• Seldom ↔ often: frequency opposites.
• Extravagant ↔ thrifty: spending habit opposites.
• Honest ↔ cheat: practical opposite in role/character (honest person vs a cheat).
• Good ↔ nice: commonly used as near-synonyms in everyday English.

Concept / Approach:
Check if substituting one term for the other reverses meaning (antonym) or preserves it (synonym). The pair that preserves positive sentiment without negation is the odd one out.

Step-by-Step Solution:

Verification / Alternative check:
Use sentence substitution: “a good gesture” ≈ “a nice gesture,” which preserves meaning, confirming synonymy.

Why Other Options Are Wrong:

Common Pitfalls:
Demanding perfect morphological antonyms; tests often allow role-based oppositions (honest vs cheat) to stand in for moral contrast.

Final Answer:
Good : Nice