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The warning sign indicates that all drivers must:

AStop.
BReverse direction.
CReduce speed and stop if necessary.Correct
Explanation
Warning signs indicate the proximity of a place or situation that involves a special danger to traffic, requiring drivers to adopt a precautionary attitude, namely reducing speed and, if necessary, stopping to avoid accidents. The remaining options are incorrect because the presence of a warning sign does not immediately or systematically require the vehicle to stop or reverse direction, actions that would only be required by mandatory stop signage or by physical impossibility to continue the journey.
Explanation generated by artificial intelligence and may contain errors. Always confirm the information with your instructor.
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