Which system of control is characterized by rapid and precise responses?

The nervous system is characterized by rapid and precise responses due to its unique structure and function. It consists of highly specialized cells called neurons, which communicate via synapses using electrical impulses and neurotransmitters. This means that signals can be transmitted quickly, allowing for immediate reactions to stimuli, such as withdrawing a hand from a hot surface or responding to a loud noise.

The nervous system's organization enables it to process information rapidly. Sensory neurons relay information from the environment to the central nervous system, where it is evaluated and processed. Then, motor neurons convey the appropriate response to the relevant muscles or glands almost instantaneously. This capacity for quick communication and response is crucial for functions that require immediate action, such as reflexes and coordination of movement.

In contrast, the endocrine system operates through hormones released into the bloodstream, leading to slower, longer-lasting effects. The immune system responds to threats like pathogens, but it operates over a longer time frame to develop an adaptive response. The digestive system processes nutrients over extended periods and is not involved in rapid responses. Thus, the nervous system is distinctly suited for quick and precise control, making it the best answer to the question.