Vocabulary – Choose the option that BEST expresses the meaning of the underlined word in context. Sentence: Whatever opinion he gives is sane.

Introduction / Context:
“Sane” in evaluative language means sound, reasonable, and guided by good judgment. Here, it qualifies “opinion,” which expects a synonym emphasizing logic and reason rather than emotion or confusion.

Given Data / Assumptions:

• Sentence structure: “Whatever opinion he gives is sane.”
• We need a synonym for “sane” in the context of judgments or opinions.
• Choices span reason (rational), lack of clarity (obscure), extremity (wild), and attitude (arrogant).

Concept / Approach:
When “sane” modifies thoughts or decisions, the closest paraphrase is “rational.” It emphasizes logical consistency and balanced judgment, matching the tone of the sentence.

Step-by-Step Solution:
Interpret “sane” as “sound” or “reasonable.”Compare options: “rational” aligns directly; others address unrelated qualities.Choose the option that maintains the sentence's positive evaluation of judgment quality.Confirm by substitution to ensure naturalness.

Verification / Alternative check:
Substitute: “Whatever opinion he gives is rational.” The meaning is preserved.

Why Other Options Are Wrong:

• obscure: suggests unclear ideas, not necessarily unreasonable.
• wild: implies reckless extremity, the opposite nuance.
• arrogant: describes attitude, not logic quality.

Common Pitfalls:
Confusing “sane” with “sincere” or “calm.” In intellectual contexts, it best matches “rational.”

Final Answer:
rational