Class B airspace is generally found around which type of locations?

Class B airspace is specifically designed to manage air traffic around the nation's busiest airports. This type of airspace typically extends from the surface up to a designated altitude and surrounds major airports where high volumes of aircraft operations can occur. By establishing Class B airspace, air traffic control can better organize and separate the traffic from commercial and general aviation operations in and around these busy airports.

The design and implementation of Class B airspace reflect an effort to enhance safety and efficiency in areas where air traffic density is greatest, facilitating the arrival and departure of numerous flights that may include large commercial airliners. Hence, it is strategically placed around major urban hubs to manage the high number of takeoffs and landings effectively.

In contrast, the other options refer to locations where Class B airspace is typically not established. For example, rural areas and small airports generally have less air traffic, making Class B airspace unnecessary. Coastal regions can have various classes of airspace, but they do not inherently necessitate or commonly feature Class B airspace unless they are adjacent to busy metropolitan areas.