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The correct pathway of a reflex arc is
Aeffector → motor neuron → brain → sensory neuron → receptor
Breceptor → motor neuron → spinal cord → sensory neuron → effector
Cbrain → sensory neuron → receptor → motor neuron → effector
Dreceptor → sensory neuron → spinal cord → motor neuron → effector
Answer & Solution
Correct answer: D. receptor → sensory neuron → spinal cord → motor neuron → effector
1. A stimulus is picked up by a receptor and sent inward.
2. Pathway: **receptor → sensory neuron → spinal cord → motor neuron → effector (muscle)**.
3. The effector then carries out the response.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch7 'Control and Coordination', §7.1.1_
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