Answer and explanation

Correct answer: A.

  1. Step 1: Since for all , multiply by : . Since , by the Squeeze (Sandwich) Theorem, the limit is . **Answer: . Why not the others:** " standard sine limit" misapplies the limit to an unscaled product with ; "Does not exist oscillatory" overlooks the dampening factor which squeezes oscillations to zero; " infinite angle" confuses the argument with the value of the bounded sine function.

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