A. to be sure that your overall health is good and to receive the necessary vaccinations
B. to identify any problems with your immune system early and to increase the stress you are under
C. to help avoid making contact with sick people and evaluate your weight
D. to check on the status of your growth and maintain your weight

Answer

to be sure that your overall health is good and to receive the necessary vaccinations

Why are regular visits to the doctor important for maintaining your optimal immune health?