The correct answer is: 2013.
Nahar Wildlife Sanctuary is a protected area in the Indian state of Rajasthan. It was declared as an eco-sensitive zone in 2013. The sanctuary is home to a variety of wildlife, including tigers, leopards, sloth bears, and deer. It is also an important bird area, with over 300 species of birds recorded.
The sanctuary is located in the Aravalli Range, and covers an area of about 1,000 square kilometers. The climate is semi-arid, with hot summers and cool winters. The vegetation is a mix of dry deciduous forest, scrub forest, and grasslands.
The sanctuary is a popular tourist destination, and offers a variety of activities, including trekking, camping, and bird watching. It is also an important research area, and is home to a number of research projects.
The following are the options for the question:
- A. 2007
- B. 2009
- C. 2013
- D. 2015
Option A is incorrect because Nahar Wildlife Sanctuary was not declared as an eco-sensitive zone in 2007.
Option B is incorrect because Nahar Wildlife Sanctuary was not declared as an eco-sensitive zone in 2009.
Option C is correct because Nahar Wildlife Sanctuary was declared as an eco-sensitive zone in 2013.
Option D is incorrect because Nahar Wildlife Sanctuary was not declared as an eco-sensitive zone in 2015.