Which of the following is a sensory system organ?

The skin is indeed a sensory system organ because it contains various types of sensory receptors that allow it to detect a range of stimuli, including touch, temperature, pain, and pressure. These receptors send signals to the brain, enabling the perception of sensations, which is a fundamental aspect of the sensory system.

The other options, such as the urinary bladder, larynx, and trachea, do not primarily function as sensory organs. The urinary bladder is involved in the storage of urine and does possess some sensory capabilities related to stretch and discomfort, but it is not primarily a sensory organ. The larynx functions in voice production and protecting the airway during swallowing, while the trachea serves mainly as a passage for air. Neither of these structures has a primary role in sensory perception like the skin does.