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1. $f (x) = \sqrt{4 - x^{2}}$

A. $- 2 \leq x \leq 0$
B. $- 2 \leq x \leq 0$
C. $- 2 \leq x \leq 0$
D. $- 2 \leq x \leq 0$

Answer: Option C

Explanation:

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