Question

which hygiene claim is supported by research?
a. antibacterial soap prevents disease better than regular hand soap.
b. brushing with a fluoride toothpaste helps prevent cavities.
c. regular professional teeth cleaning improves dental health.
d. there are no benefits to handwashing.

Explanation:

Research supports that fluoride in toothpaste strengthens tooth enamel and reduces cavity risk. Antibacterial soap is not proven more effective than regular soap for disease prevention. While professional cleanings aid dental health, the most definitively research-backed claim here is fluoride toothpaste preventing cavities. Handwashing has well-documented benefits, so D is false.

Answer:

B. Brushing with a fluoride toothpaste helps prevent cavities.