3%
4%
5%
7%
Answer is Right!
Answer is Wrong!
The correct answer is: 3%.
The length of a runway is increased by 3% for every 300 meters of rise above sea level. This is because the air is thinner at higher altitudes, which means that airplanes need to take off and land at a higher speed. The extra length of the runway allows airplanes to reach the required speed before they take off or land.
Option A: 3% is the correct answer.
Option B: 4% is incorrect. The length of the runway is increased by 3%, not 4%.
Option C: 5% is incorrect. The length of the runway is increased by 3%, not 5%.
Option D: 7% is incorrect. The length of the runway is increased by 3%, not 7%.