Final answer:
In a reflex arc, the sensory neuron transmits afferent impulses to the central nervous system. So, the option C is correct.
Step-by-step explanation:
Within a reflex arc, the sensory neuron plays a pivotal role in conveying afferent impulses to the central nervous system.
Tasked with the responsibility of transmitting signals from specialized receptors that detect alterations in the environment, the sensory neuron serves as a crucial conduit for sensory information.
This information travels from the sensory receptors to the central nervous system, facilitating rapid and automatic responses to stimuli.
The sensory neuron acts as the initial messenger in this process, relaying sensory input to the central nervous system, where subsequent processing and motor responses are orchestrated.
By efficiently carrying signals from the periphery to the central nervous system, the sensory neuron is fundamental to the reflex arc's ability to elicit quick and involuntary reactions to stimuli, contributing to the body's overall adaptive and protective mechanisms.
Hence, the option C is correct, In a reflex arc, the sensory neuron transmits afferent impulses to the central nervous system.