Which organization is abbreviated as TSA?

The correct answer is the Transportation Security Administration. This organization is a crucial component of the U.S. Department of Homeland Security, established following the events of September 11, 2001, to enhance the security of the nation’s transportation systems. Its primary responsibilities include safeguarding air travel and regulating airport security measures to protect against threats.

While the other options might sound plausible, they do not represent actual organizations involved in transportation security. The Transit Safety Agency and Terminal Safety Administration are not recognized entities in relation to transportation security, and the Travel Security Authority does not exist as a guiding body in this field. The TSA is well-known for implementing security screening processes and creating policies to ensure passenger and cargo safety in aviation, making it the authoritative body in the context of transportation security.