The word "tenacious'' means holding firm, persistent, or determined.
Step 1: Analyze options
- (A) Weak-willed: opposite meaning.
- (B) Persistent: similar meaning, showing determination.
- (C) Average: neutral meaning; unrelated.
- (D) Specialized: focused on a particular area; unrelated.
Step 2: Choose closest synonym
Option (B) "Persistent'' matches the meaning of "tenacious.''