Regular physical activity can prevent diseases by a. controlling weight b. controlling blood pressure c. improving cardiorespiratory d. all of the above

D.all of the above

Explanation:

Daily physical activity can help in the prevention of heart disease, stroke & obesity by strengthening heart muscles,lowering of blood pressure improving blood flow.Daily physical activity  helps in the improvement of muscle strength and boosting of endurance.Exercise helps in the delivery of oxygen & nutrients  to body tissues which in turn will help cardiovascular system to work in a proper way. And when  heart as well as lung health improve,person would have more energy which will help him/her in the tackling of daily chores.

Benefits of physical activity include:

Clearance of arteries & veinsWeight controlRegulation of BPReduction of blood sugar levelsStrong bonesHelps in the prevention of cancer