Step 1: Analyzing the association.
- "String" is often associated with "Wrist" when referring to a wristband or string bracelet.
- "Yellow ribbon" is commonly worn around the wrist, symbolizing awareness or support for a cause.
- "Finger" is also often associated with the wrist, particularly with bracelets or rings worn on the finger near the wrist.
Step 2: Conclusion.
The correct answer is (a), "Wrist".