The study of human behavior is called psychology. There are different types of emotion and these are happiness, sadness, anger, etc.
The correct answer to the question is option D which is a flexibility exercise.
According to the question, flexibility and exercise can help to perform a full range of motion.
Hence, the correct answer is option B.
For more information about the exercise, refer to the link:-
https://brainly.com/question/10577996