Answer:
Brain
Step-by-step explanation:
The brain is a vital part of the nervous system and one of the most complex organ of the nervous system that serves as the center of nervous system.
The brain takes information received from the senses, and then the information received is further used to determine actions to be taken by the organism. In other words, the processes the information, combines the processed information with the organisms current needs, and then further generate responses to that effect.
The brain controls every part of the body.