What does an arm bent at the elbow signify?

Answer: A — Right turn

An arm bent at the elbow typically signifies a right turn. When a driver wants to indicate a right turn using hand signals, they extend their arm at a 90-degree angle with the elbow bent, pointing upward. This visual cue communicates to other road users that the driver intends to make a right turn, effectively enhancing road safety by ensuring that intentions are clearly conveyed to pedestrians and other drivers. In contrast, other signaling options involve different arm positions: an extended arm indicates a left turn, while an arm bent downward serves as a signal to stop. Therefore, understanding these hand signals is crucial for safe driving practices and effective communication on the road.