Ace the Officer Aptitude Rating (OAR) 2026 – Unleash Your Inner Officer!

The stratosphere is the second layer of Earth's atmosphere, located above the troposphere and below the mesosphere. The typical altitude of the stratosphere extends from about 5 miles (approximately 8 kilometers) to about 30 miles (approximately 50 kilometers) above sea level. Therefore, the correct choice indicating a typical altitude associated with the stratosphere is indeed 20 miles.

While the lower boundary of the stratosphere begins around 5 miles, the highlighted choice aligns with the upper range of this atmospheric layer, which is recognized for its relatively stable air and the presence of the ozone layer, essential for absorbing harmful ultraviolet radiation from the sun. This stability contributes to fewer Weather disturbances occurring in the stratosphere compared to the troposphere, which lies below it.