AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
(A) Both (A) and (R) are true and (R) is the correct explanation of (A).
Mineral formation by geological processes takes millions of years, making replenishment infinitely slow compared to consumption, which is why minerals are finite and non-renewable.
The passage from the Conservation of Minerals section directly states: "The geological processes of mineral formation are so slow that the rates of replenishment are infinitely small in comparison to the present rates of consumption. Mineral resources are, therefore, finite and non-renewable." The Reason directly explains why the Assertion is true, so option (A) is correct. Always check if the Reason logically causes or explains the Assertion — here it does.