Step 1: Understanding the Question:
This question tests knowledge of protected areas in India.
Step 2: Detailed Explanation:
India has approximately 700 protected areas (National Parks and Wildlife Sanctuaries).
This includes over 100 national parks and over 500 wildlife sanctuaries.
50 (A): Too low.
270 (B): Too low.
450 (C): Too low.
Thus, the correct answer is 700.
Step 3: Final Answer:
Thus, the number of protected areas in India is approximately 700, which corresponds to option (D).
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