Answer:
The best answer to the question: What would be the BEST advice you can give her on how not to get sick? Would be: C: Live a healthy lifestyle, get the necessary vaccinations, and make sure to wash your hands often.
Step-by-step explanation:
Eating well, providing the body with the necessary nutrients and in the right amounts, as well as exercize, will strengthen all body systems and most importantly the immune system, which is the main responsible for fighting off infection by any pathogen. Also, sleeping enough, providing a healthy lifestyle to the body, acts as an immune system booster. However, alongside this part, vaccinations and hygiene are vital to preventing the contraction of a pathogen, such as the flu. While vaccinations will keep your immune system prepared in case of an infection, and make it easier for the body to fight off the pathogen with as little problem to you as possible, washing hands will ensure that you do not go around passing an infection to others, and that others will not pass their pathogens to you through contact. This is why answer C is the best option, because it gives all the best ways in which Megan can avoid contracting the flu.