In the proper hand washing sequence, which step comes last?

• A. Dry hands and arms.
• B. Wet hands and arms.
• C. Apply soap.
• D. Scrub hands and arms vigorously.

Answer: (A)

The main idea is that the goal of hand hygiene is to remove microbes and then completely eliminate moisture to prevent transfer and growth. In a proper hand washing sequence you wet the hands, apply soap, scrub all surfaces, rinse, and the last step is to dry the hands and arms. Drying is the final step because moisture can enable germs to spread more easily and cling to skin and surfaces; using a clean towel to dry removes remaining moisture and helps prevent recontamination, especially if you use the towel to turn off the faucet.