Question

which action can best limit the transmission of pathogens by direct contact?
a. washing hands
b. using mosquito netting
c. washing vegetables
d. drinking only clean water

Explanation:

Direct contact transmission of pathogens occurs when pathogens are transferred through physical contact (e.g., touching contaminated surfaces or infected individuals). Washing hands removes pathogens from hands, directly interrupting this transmission route. Other options target different transmission modes: mosquito netting (vector-borne), washing vegetables/drinking clean water (food/waterborne).

Answer:

A. Washing hands