Question

Choose the option which is closest in meaning to the word SUBTLE.

• A. Innocent
• B. Elusive
• C. Dangerous
• D. Insidious

Hint:

Subtle means gradual and hard to notice; look for the option that shares that quiet, hidden quality.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept.
This is a synonym question. We need the option that carries the same core sense as "subtle": something delicate, not obvious, and often gradual in how it shows itself.

Step 2: Key Approach.
Go through each option and check whether it shares the gradual, hard to notice quality of "subtle," rather than just a loosely related idea.

Step 3: Detailed Explanation.
"Innocent" means free of guilt, an unrelated idea to subtlety. "Elusive" means difficult to catch or define, which is about escaping grasp rather than being quietly gradual. "Dangerous" describes open risk or harm, almost the opposite feel of something subtle. "Insidious" describes something that develops gradually and stays hidden while it works, which is the same gradual and understated quality that "subtle" carries.

Step 4: Final Answer.
"Insidious" is the option that shares the gradual, hidden sense of "subtle," so it is the closest synonym. \[ \boxed{\text{Insidious}} \]