Answer:
Left arm because the driver seat is on the left, so it would be easier, and safer, to use your left arm.
But, if you live in an area in which the driver seat is on the right, then it would be the right arm.
The driver signal about the turn in case of tailing or not operating signal lights using his left arm. Thus, option B is correct.
The signal lights are the color indicators present at the squares and at different turns that mediates the traffic of a region by allowing the drivers to stop and drive safely over the road.
The indicators being broken allows the vehicle to enter from any lane and thereby increases the chances of accidents. The driver in the following case must signal using their left arm. Thus, option B is correct.
Learn more about signal lights, here:
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