In the context provided, optical illusion refers to what?

• A. A misleading visual image. For landing, brain misinterprets features on the ground causing misread of spatial relationships.
• B. A malfunction of the autopilot.
• C. A misread routine checklist.
• D. An optical system error.

Answer: (C)

Optical illusions in aviation deal with misperceptions caused by visual information that lead you to act on the wrong interpretation. Here, the idea is that visual cues in how a routine checklist is presented can cause you to misread what you’re supposed to do next. If the layout, wording, or emphasis on the checklist creates a misleading impression, you might take an incorrect action based on that perception. That’s why misreading a routine checklist is the best fit for this term in the context provided—it emphasizes how visual presentation of information can trigger a human-reading error. The other options describe faults of the aircraft systems or such, not perceptual misinterpretation of visual information.