What is the Stratosphere's approximate upper height?

• A. About 160,000 feet.
• B. About 60,000 feet.
• C. About 30,000 feet.
• D. About 300,000 feet.

Answer: (B)

The main idea tested is where the stratosphere ends and what altitude is used as its approximate upper limit in aviation knowledge. The stratosphere sits above the weather-focused troposphere, and in many pilot training references the boundary between layers is taught around the 60,000-foot mark as the practical upper limit of the stratosphere. This makes the option around 60,000 feet the best match, since it aligns with the common classroom and test convention that the stratosphere extends upward to about that height.

Why this fits: the troposphere contains most weather and clouds, and the stratosphere begins above that layer, continuing upward to a height often approximated as sixty thousand feet in introductory material. So, when choosing the best approximate upper height, 60,000 feet is the closest representative figure among the options.

The other numbers don’t fit the typical aviation convention: 30,000 feet is within the troposphere where weather occurs; 160,000 feet is higher than what basic aviation references usually quote for the stratosphere’s upper boundary, and 300,000 feet is far beyond the practical atmosphere for flight.