Final answer:
The most important hygiene practice is washing hands.
Step-by-step explanation:
Washing hands is the most important hygiene practice for preventing the spread of pathogens and reducing the risk of infection. Handwashing with soap and warm water can help remove harmful viruses and bacteria from the hands. It is recommended to wash hands before and after certain activities such as handling food, using the toilet, and interacting with sick individuals. Proper handwashing technique involves using soap and running water, and washing for at least 20 seconds.