Which of the following is a standard precaution for infection control?

Hand washing is considered a standard precaution for infection control because it is the most effective way to prevent the transmission of infectious agents. Proper hand hygiene involves washing hands with soap and water or using an alcohol-based hand sanitizer to remove dirt, bacteria, and viruses from the skin. This practice is essential for protecting both the caregiver and the individuals receiving care from potential infections. Effective hand washing should be performed before and after providing care, after using the restroom, and at other critical times to limit the spread of pathogens.

The other options, while they contribute to general health and well-being, do not specifically function as infection control measures. Wearing warm clothes is important for maintaining body temperature but does not prevent infection. Avoiding crowds can reduce exposure to illnesses in general but is not always practical or effective in preventing infection transmission. Getting plenty of rest supports the immune system, but again, it does not serve as a direct infection control method.