Final answer:
The human body is made up of 11 major organ systems that work together to maintain homeostasis and carry out various functions.
Step-by-step explanation:
The correct answer is B. 11. The human body is made up of 11 major organ systems, which work together to maintain homeostasis and carry out various functions. These systems include the integumentary system (skin, hair, nails), skeletal system (bones, cartilage), muscular system (muscles), nervous system (brain, spinal cord, nerves), endocrine system (glands and hormones), cardiovascular system (heart, blood vessels), respiratory system (lungs, airways), digestive system (digestive organs), urinary system (kidneys, bladder), reproductive system (reproductive organs), and lymphatic/immune system (lymph nodes, lymphatic vessels, immune cells).
Each organ system is composed of specific organs and tissues that work together to perform vital functions necessary for the overall well-being and survival of the organism.