Which system is responsible for supporting higher mental functions and environmental awareness?

• A. Endocrine System
• B. Nervous System
• C. Circulatory System
• D. Lymphatic System

Answer: (D)

The nervous system handles higher mental functions and environmental awareness by processing information in the brain. The cerebral cortex manages thinking, memory, language, planning, and problem solving, while it also interprets sensory input from the environment to create perception and guide actions. The peripheral nervous system relays sensory signals to the brain and carries motor commands back to muscles, enabling you to respond to what you sense. While hormones in the endocrine system can influence mood and arousal, and the circulatory system supports brain function by delivering blood and nutrients, neither handles conscious processing and perception the way the nervous system does.