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The signal given by the traffic control officer requires traffic coming from in front of him and from behind him to:
AProceed.
BReduce speed.
CStop.Correct
Explanation
The signal of horizontally extended arms by the traffic control officer requires all traffic to stop that comes from directions that cross the direction indicated by the arms. This means that drivers approaching from in front or from behind the officer have a duty to stop. The other options are incorrect because this stop signal is imperative, not allowing vehicles coming from these directions to proceed nor being limited to a mere indication to reduce speed.
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