Passengers who have been cleared by security and those who have not must not be allowed to mix. If this accidentally happens, what will result?

Understand the Problem
The question is asking what would happen if passengers who have been cleared by security accidentally mix with those who have not. This requires knowledge of airport security procedures and regulations.
Answer
Passengers and their luggage must undergo secondary screening before boarding an aircraft
The correct answer is C: These passengers and their luggage must undergo secondary screening before boarding an aircraft.
Answer for screen readers
The correct answer is C: These passengers and their luggage must undergo secondary screening before boarding an aircraft.
More Information
To maintain security, passengers who have not been properly screened must be screened before boarding an aircraft. Protocols require secondary screening to ensure no security breaches occur.
Tips
It's important to consider security protocols and the need to maintain a secure environment in airports.
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