Answer:
Option (b).
Step-by-step explanation:
Physical activity imply the body movement by the involvement of the skeletal muscles and require energy expenditure. Physical activity includes the daily activity and physical exercises of the body.
Physical activity can be performed by the individual of her own choice and recognize the chains of interdependence. In society, the individual with good physical activity is more strong and fit and society may influence the physical activity choice.
Thus, the correct answer is option (b).