AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
A reflex arc is formed in the spinal cord. It is located there rather than the brain because the spinal cord allows faster responses — waiting for the brain would take too long and cause harm.
The key points examiners expect: (1) location = spinal cord, (2) reason = speed/efficiency — the brain's thinking process is too slow for urgent responses like withdrawing from heat. Both points are needed for full credit.