Final answer:
Health care workers should wash their hands between every procedure or client to prevent the spread of pathogens.
Step-by-step explanation:
D) Between every procedure or client
Health care workers should wash their hands between every procedure or client to prevent the spread of pathogens. This is important because handwashing helps to remove and kill germs that can cause infections. Washing hands thoroughly is especially crucial for health-care workers who come into contact with patients and potentially infectious substances.