The Hathnikund barrage became functional from which year?

The correct answer is: C. 1998.

The Hathnikund Barrage is a barrage on the Yamuna River in Yamunanagar district of Haryana, India. It was constructed in 1998 to provide irrigation and drinking water to the states of Haryana, Punjab, Rajasthan, and Delhi. The barrage is also used for flood control and power generation.

Option A is incorrect because the Hathnikund Barrage became functional in 1998, not 2002.

Option B is incorrect because the Hathnikund Barrage became functional in 1998, not 2012.

Option D is incorrect because the Hathnikund Barrage became functional in 1998, not 2000.