The main responsibility of the Transportation Security Administration is to:

A. Provide police protection for airline passengers

B. Maintain secure flight schedules for the airlines

C. Make sure planes are mechanically ready for flying

D. Screen passengers for weapons and explosives

Answer

The correct answer is D. Screen passengers for weapons and explosives.

Explanation

The Transportation Security Administration (TSA) is a U.S. government agency primarily responsible for ensuring the safety and security of the nation's transportation systems, including air travel. One of its main duties is to screen passengers and their belongings at airports to detect and prevent the carrying of weapons, explosives, or other dangerous items onto airplanes.

The other options do not fall under the TSA's responsibilities:

Thus, option D accurately encapsulates the TSA’s primary role in ensuring air travel security.