Define "screening" in the context of aviation security.

Screening, in the context of aviation security, refers specifically to the process of examining passengers and their belongings to ensure safety on aircraft and within airports. This involves various methods such as the use of metal detectors, X-ray machines for baggage, pat-downs, and other security technologies designed to detect prohibited items like weapons or explosives. The primary goal of screening is to prevent dangerous items from being brought onto an aircraft, thereby securing the safety of all passengers and crew members.

Other options may relate to important aspects of aviation operations but do not pertain to security screening. Scheduling passenger flights is critical for operational efficiency, assessing airport safety standards is essential for overall airport management, and the procedure for boarding passengers is vital for the logistics of flight operations. However, none of these directly address the specific function of screening that is crucial in safeguarding air travel.