a. heredity, unhealthy behaviors, and the environment. heredity is passed down from parents or even family before your parents leading to unchangeable diseases, for example, severe acne or a heart attack at an early age. unhealthy behaviors like eat junk food instead of healthy foods will lead to high blood pressure, heart attacks, or even strokes. the environment on the other hand can be just like unhealthy behaviors. for example, high density pollution in a city will cause lung cancer and difficulty breathing and asthma. i hope this information you guys understand the question better! : )
the person which heart has prolonged high blood pressure is more prone to stroke if he isn't healthy. so there are 2 cases: if a person does sports regularly and lives healthy will have a healthy heart and will survive a high blood pressure, but if it opposite, there's a chance that he will die of stroke, because of unhealthy heart. so, actually we cannot function without a heart. the better it is, the stronger and intelligent we are. it can become better just when we are healthy.
the answer is b because the it would people gain interest in it.
both health scientists and health educators focus on health care and want to share their passion with the world.