When should you wash your hands and for how long?

Washing hands at appropriate times is crucial for maintaining food safety and preventing the spread of germs. The correct choice emphasizes specific situations that are known to increase the risk of contamination. Washing hands after returning from the bathroom, smoking, and handling money is essential because these activities can introduce harmful pathogens or bacteria to the hands.

Spending 20 seconds on handwashing is also aligned with health guidelines, as this duration ensures thorough cleansing, including scrubbing all parts of the hands and following proper handwashing techniques. This practice is vital for anyone working in food service, as it helps to protect both employees and customers from potential foodborne illnesses.

In contrast, the other options either suggest insufficient handwashing timing, do not encompass all necessary situations for hand hygiene, or emphasize feeling dirty rather than a consistent routine of when handwashing is required. Consistent adherence to the guidelines outlined in the correct choice helps establish a culture of cleanliness and safety in food environments.