Final answer:
To maintain good health, avoid eating raw meat and refrigerated leftovers that are more than 24 hours old. Ensure meat reaches a minimum internal temperature of 74 degrees C (165 degrees F), and practice regular handwashing to prevent foodborne diseases.
Step-by-step explanation:
To maintain good health, certain activities should be avoided. Of the options provided, the activities that should be avoided are: eating raw meat and eating refrigerated leftovers more than 24 hours after preparation. Eating raw meat, such as ground beef or chicken which are not cooked well done, can expose one to harmful bacteria and pathogens. These can lead to foodborne diseases, which are preventable by ensuring meat reaches an internal temperature of at least 74 degrees C (165 degrees F).
Leftovers, if not stored properly, can also harbor bacteria and should ideally be eaten within 24 hours of preparation. Regular handwashing, especially after handling raw meat, is one of the most effective ways to prevent the spread of these pathogens.
Meanwhile, using an alcohol-based mouthwash might dry out the oral mucosa, but this does not pose a significant health risk if used responsibly. Having direct contact with soil can expose one to bacteria, yet it is not inherently unhealthy, and can often be mitigated by handwashing. Lastly, using a razor blade comes with the risk of cuts or possible infections if not used properly or if shared, but it is not inherently unhealthy when done with caution and proper hygiene.