The study of human behavior is called psychology. There are different types of behavior in human beings and these are happiness, anger, sadness and etc.
The correct answer to the question is option B that is In its most basic definition, it refers to any form of movement that makes use of the body's energy.
The exercise of the body includes all the body parts are called physical activity. For example- walking, running and etc.
According to the question, option B describes the best definition of physical activity.
For more information about the exercise, refer to the link:-
https://brainly.com/question/10577996
