Question

proper hand washing uses
warm water and lasts for 10 sec.
warm water and soap and \scrubbing\ lasts for approximately 10 - 15 sec.
warm water, soap, and single use towels
cold water, soap, and single use towels.

Explanation:

Proper handwashing requires using warm water and soap, with scrubbing lasting 10-15 seconds to effectively remove germs. The other options are incomplete or incorrect: the first lacks soap, the third misses the required scrub time, and cold water is not recommended over warm for optimal cleaning.

Answer:

Warm water and soap and "scrubbing" lasts for approximately 10-15 sec.