Step 1: Understanding the Concept:
This question asks for the antonym of the given adjective.
Step 2: Key Formula or Approach:
Define the word "blatant." It means (of bad behavior) done openly and unashamedly; completely lacking in subtlety; very obvious.
Step 3: Detailed Explanation:
- We are looking for a word that means subtle, not obvious, or not attracting attention.
- Option (C), "unobtrusive," means not conspicuous or attracting attention. This is a direct antonym of blatant.
- The other options are unrelated: indecisive (not able to make decisions), perceptive (insightful), involuntary (done without will), spontaneous (unplanned).
Step 4: Final Answer:
The opposite of blatant (obvious and conspicuous) is unobtrusive (not conspicuous).