Question

when you finish working with chemicals, biological specimens, and other lab substances, always
○ treat your hands with skin lotion
○ wash your hands thoroughly with soap and water
○ wipe your hands on a towel
○ wipe your hands on your clothes

Explanation:

After working with chemicals, biological specimens, and other lab substances, there may be residues on hands that can be harmful. Washing hands thoroughly with soap and water is the best way to remove these substances and ensure safety. Skin - lotion is for moisturizing, wiping on a towel or clothes doesn't remove contaminants.

Answer:

B. wash your hands thoroughly with soap and water