Assertion (A): Crickets make quirky noise only at night.
Reason (R): Nocturnal animals stay active at night.

A and R are correct and R is the correct explanation for A.

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A is correct but R is incorrect.

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A is incorrect but R is correct.

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A and R are correct; R is not the correct explanation for A.

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Solution

The correct option is A A and R are correct and R is the correct explanation for A.
$∙$ Animals that are active during night and sleep during day are called nocturnal animals.
$∙$ Crickets emit a high pitched sound which bounses off objects to find prey or protect from predators during night.

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