Question

which best describes someone properly washing their hands? bemice lathers her hands by rubbing them together with soap and then scrubs her hands for at least 10 seconds. layla rinses her clean hands under fresh, running water and dries her hands using a clean towel. nina rubs her hands together for 10 seconds, making sure to get under her nails and between her fingers. paola scrubs the top and underside of her hands for 20 seconds before rinsing under clean running water.

Explanation:

Proper hand - washing involves using soap, scrubbing all parts of the hands (top, underside, between fingers, under nails) for at least 20 seconds, and then rinsing under clean running water. Paola's action of scrubbing the top and underside of her hands for 20 seconds before rinsing meets these criteria better than the others. Bemice scrubs for at least 10 seconds which may not be enough, Layla starts with clean hands so it's not a full hand - washing process, and Nina doesn't mention using soap.

Answer:

Paola scrubs the top and underside of her hands for 20 seconds before rinsing under clean running water.