Question

the number-one way to prevent the spread of disease is ______.
bathing daily
keeping the fingernails short
wearing gloves
handwashing

Explanation:

In medical and health knowledge, handwashing is the most effective primary method to prevent disease spread by removing pathogens from hands. Other options like daily bathing, short fingernails, or wearing gloves are less critical or context - specific compared to handwashing.

Answer:

D. handwashing