Discussion
Given below are two statements, one marked as Assertion (A) and the other as Reason (R). Read the statements and choose the correct option.
Assertion (A) : Solar energy and Tidal energy are called renewable energy sources.
Reason (R) : Non-renewable energy sources take thousands of years to be renewed.
Answer: B
The keyed answer is both (A) and (R) are true and (R) is the correct explanation of (A).
(A) is true: solar and tidal energy are renewable sources because nature supplies them again and again. (R) is true: coal, petroleum and natural gas take thousands of years to form, so they cannot be renewed on a human timescale. The key reads (R) as the reason for the classification, since a source counts as renewable when it is replenished quickly, unlike those that need thousands of years.
Option 1 would treat (R) as true but not bearing on (A). Many readers would argue for that, since (R) describes non-renewable sources and not solar or tidal energy. Options 3 and 4 need a false statement, and neither statement is false.
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