Assertion (A): Copper is widely used for making electric wires.
Reason (R): Copper is a poor conductor of electricity.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Assertion (A) is correct, but Reason (R) is not correct.
In an Assertion-Reason question, each statement is checked for truth first, and then R is tested as the cause of what A describes.
Assertion — correct. Most household electric wires are made of copper.
Reason — not correct. Copper is one of the best conductors of electricity; that is exactly why it is chosen for wires. A poor conductor would waste electricity as heat.