Answer:
Behavior theory.
Explanation:
Behavioral learning is an important theory that helps to understand the behavior of humans. It is also known as behaviorism or behavioral psychology that helps to understand the environment that causes people to behave in certain ways.
So, a teacher whose student is performing poor in class, can understand his behavior with the help of behavioral theory. She will be able to examine the student's environment and know what has caused him to perform poor.
Therefore, option E is correct.
