Question

1 what is the main job of the nervous system?
to control how the body senses, thinks, and responds
to pump blood through the body
to break down food
to protect the organs from injury

Explanation:

The nervous system's main function is to control and coordinate the body's sensory input, processing (thinking), and motor responses. Pumping blood is the circulatory system's job, breaking down food is the digestive system's, and protecting organs from injury is part of the skeletal/integumentary systems' roles. So the correct option is the one about controlling how the body senses, thinks, and responds.

Answer:

The option "To control how the body senses, thinks, and responds" (the first option).