Final answer:
The Golgi tendon organ, the muscle spindle, and the Pacinian corpuscle are all sensory receptors involved in detecting stretch, tension, and pressure in muscles, tendons, and joints, thus the correct answer is a) Sensory receptors.
Step-by-step explanation:
The Golgi tendon organ, the muscle spindle, and the Pacinian corpuscle are all types of sensory receptors that are responsible for various forms of somatosensation, including the perception of stretch, tension, and pressure within the body's muscles, tendons, and joints. Specifically, the muscle spindles are stretch receptors that detect changes in muscle length, the Golgi tendon organs are tension receptors that sense the force of muscle contractions, and the Pacinian corpuscle is a type of mechanoreceptor that is sensitive to vibrations and deep pressure touch.
Therefore, given the options provided, the correct answer to the student's question is:
These receptors play critical roles in the body's proprioceptive and kinesthetic systems, providing the brain with information needed to coordinate movement and maintain posture.