In order to meet their needs.
According to maslow, Behaviors will be directly correlated to what the people actually desired in their life.
For example, if a girl has the needs to feel popular among her peers, she will more likely display several behavior to make her more attractive such as putting on make up, using nice dresses, etc.
Answer:
For an object to move, there must be a force. A force is a push or pull that causes an object to move, change direction, change speed, or stop. ... Not all forces cause motion, however. Some forces, like gravity and friction, resist or work against movement.
I hope you find this helpful.