The correct answer is A. Regular participation in physical activity reduces the risk of developing various diseases.
Explanation:
Regular physical activity has positive effects on health such as increased levels of energy, reduced stress, and lower risk of developing certain diseases. It has been found regular exercise does not prevent an individual from developing a disease, but reduces significantly the risk of developing various diseases, this includes diabetes, heart disease, and cancer. This is because exercise regulates insulin which is related to diabetes, keeps blood pressure stable which is related to heart disease, and helps the immune system which is related to cancer development. According to this, "Regular participation in physical activity reduces the risk of developing various diseases".
If we were to treat the bacterial population with that specific antibiotic, only the resistant bacteria will be able to multiply; the antibiotic selects for them. These bacteria can now increase in numbers and the end result is a population of mainly resistant bacteria
