I would say B, as both A and D are obviously incorrect and stress can be a natural part of life as long as it does not dominate you.
The correct answer should be low to moderate intensity and long duration. For weight loss, it's better to do something at a lower intensity but for a long time than to do something quickly but pushing yourself. That's why cardio exercises and running is great for losing weight. It helps you work at your own pace and you can do them for a long time.
Cardiovascular is probably your answer
Cardio- the heart
Vascular- vessels
Circulatory- blood
Answer:
D. We can control some of the factors, but not all of them.
A) Because adequate sleep is as important to fitness as exercise is to healthy living
