Which of the following is a symptom that reflects a decline in the sensory system?

The correct answer reflects a symptom that aligns with sensory system decline. Discharge from the ears can indicate potential issues such as infections, blockages, or other conditions that can impair hearing and balance, which are integral components of the sensory system. When the sensory system is compromised, such symptoms may arise and suggest a decline in its functionality.

In contrast, increased reaction time, enhanced sense of touch, and faster visual adjustment to light generally indicate improved or stable sensory functions rather than a decline. For example, increased reaction time can suggest the opposite of decline—indicating that the body is still processing sensory information efficiently. Similarly, an enhanced sense of touch or faster visual adjustment to light would typically reflect better sensory processing rather than a deterioration.