Why should a driver periodically check that emergency exit release mechanisms function properly, not just rely on a visual check?

Pick an answer

1. Exit mechanisms never need testing once installed by the manufacturer
2. This check is required only once a year during the annual inspection
3. Visual inspection alone is always sufficient to confirm an exit works correctly, since a mechanism that looks intact rarely fails in practice
4. A mechanism that looks fine visually could still be stuck or malfunctioning when actually operated

Correct!

Not quite. The correct answer is highlighted.