What type of inspections focuses on scanning critical components and flight controls?

The correct answer focuses on exterior inspection, which is essential for ensuring the safety and functionality of an aircraft before flight. Exterior inspections involve a visual examination of the aircraft's outer components, including critical structures and flight control systems, to identify any potential issues such as wear, damage, or abnormalities that could affect the aircraft's performance.

During an exterior inspection, crew members assess vital elements such as the wings, fuselage, stabilizers, landing gear, and control surfaces. This process is crucial for verifying that everything is operational and compliant with safety standards, preventing accidents or malfunctions during flight. By closely examining these components before takeoff, crew members can ensure that all systems are functioning correctly, thus maintaining a high level of safety for the aircraft and its occupants.