Final answer:
The nervous system contains sensory receptors for heat, cold, touch, and pain. The correct answer is (A) Nervous system.
Step-by-step explanation:
The correct answer is (A) Nervous system. The nervous system contains sensory receptors for heat, cold, touch, and pain. The sense of touch is controlled by a network of nerve endings and touch receptors, which are responsible for sensations such as cold, hot, smooth, rough, pressure, tickle, itch, pain, and vibrations.
For example, thermoreceptors in the skin detect changes in temperature and help us perceive hot or cold sensations. Pain receptors detect pain and protect our body from harmful stimuli. These receptors send signals to the central nervous system, where the brain processes and interprets the sensory information.
In contrast, the digestive, respiratory, and circulatory systems do not contain specialized sensory receptors for touch, heat, cold, or pain. The correct answer is (A) Nervous system.