This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
The most widely recommended tool for removing plaque from proximal tooth surfaces 
Select and explain. 
A. Tooth brush, B. Mouth wash, C. Dental floss, D. Tooth paste
C: Dental floss
Answer: C: Dental floss 
Explanation: None