Final answer:
Regular handwashing is the most important part of personal hygiene when handling food to prevent the spread of foodborne diseases.
Step-by-step explanation:
The most important part of personal hygiene when handling food is regular handwashing. This practice is crucial because it is one of the most effective methods to prevent the spread of foodborne diseases and other pathogens. Washing your hands should be done before and after handling or preparing food, before eating, after using the bathroom, and whenever hands become soiled. Using soap and warm running water, follow proper handwashing techniques, which include scrubbing all surfaces of the hands, between fingers, and under the nails for at least 20 seconds, then rinsing from the wrist to the fingertips. Always dry hands thoroughly with a clean towel or hot air blower.