The correct answer is: 240 m.
Harha or Doon valley is a valley in the Himalayas, located in the Indian state of Uttarakhand. It is a popular tourist destination, known for its scenic beauty and its proximity to the city of Dehradun. The valley is located at an altitude of 240 meters above sea level.
Option A: 250 m is incorrect. The height of Harha or Doon valley is 240 meters, not 250 meters.
Option B: 200 m is incorrect. The height of Harha or Doon valley is 240 meters, not 200 meters.
Option C: 240 m is the correct answer. The height of Harha or Doon valley is 240 meters.
Option D: 270 m is incorrect. The height of Harha or Doon valley is 240 meters, not 270 meters.