Question

how long must soap be in contact with your hands for handwashing to be effective?
at least 10 seconds
at least 40 seconds
at least 20 seconds
at least 60 seconds

Explanation:

According to health guidelines, for handwashing to be effective, soap should be in contact with hands for at least 20 seconds. This duration allows the soap to break down dirt, grease, and kill germs effectively.

Answer:

At least 20 seconds