Answer:
The answer is C. 253.
Step-by-step explanation:
The bold lines indicate increases in elevation and are labeled in 50 meter increments. The X starts at 50 meters up the hill. To get to 300 meters, it is 250. Plus the extra 3 meters to get to the very top that is labeled as 303 meters. So you would add 250+3 to get 253.