Question

what temperature does water need to be for handwashing to be effective?
there is no minimum temperature required for handwashing to be effective
between 90°f and 99°f
between 80°f and 89°f
100°f or more

Explanation:

The effectiveness of handwashing depends on using soap and proper scrubbing technique, not on a specific water temperature. Cold, warm, or hot water can all be used as long as soap is applied and hands are rubbed together thoroughly for at least 20 seconds.

Answer:

There is no minimum temperature required for handwashing to be effective.