Question 293Navigation General

You are correct, the answer is C) 1 inch is equal to 5,000,000 inches on the Earth's surface. The scale 1:5,000,000 on a chart means that 1 unit of measurement on the chart (such as 1 inch) represents 5,000,000 of those same units on the Earth's surface. Since 1 inch is a common unit of measurement on charts, this means that 1 inch on the chart equals 5,000,000 inches on the actual Earth's surface. The other options are incorrect because they do not accurately reflect the meaning of a 1:5,000,000 scale. Option A would mean 1 inch equals 5,000 inches on the Earth's surface, which is not correct. Options B and D refer to nautical miles, but the scale is not given in nautical miles.