<b>Assertion (A):</b> A bulb glows only when the electric circuit is complete. <b>Reason (R):</b> Electric current flows only through a closed circuit.

Options

Option A is correct

A. Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.

Option B

B. Both Assertion and Reason are true, but Reason is not the correct explanation.

Option C

C. Assertion is true, but Reason is false.

Option D

D. Assertion is false, but Reason is true.

Explanation

For a bulb to glow, electric current must flow through it. Current only flows when there is a complete, unbroken path, which is a closed circuit. Therefore, the reason correctly explains the assertion.