Final answer:
The statement that hands must be washed in a designated handwashing sink and not in food prep, dishwashing, or waste water sinks is true, which helps prevent contamination and the spread of pathogens.
Step-by-step explanation:
The statement is true: hands must be washed in a sink designated specifically for handwashing. This is to avoid contamination of food prep areas and prevent the spread of pathogens when hands come into contact with waste water or after handling hazardous materials. The CDC outlines a proper handwashing technique, which involves wetting hands with clean, running water, applying soap, and ensuring that the handwashing process includes rinsing so that microorganisms are washed from the wrist to the fingertips and not up onto the arms. Hands should be dried using a clean towel or hot air blower, with towels also used to turn off the faucet and open doors to maintain cleanliness.