which of the following describes the hand signal for stopping an approaching driver?

The standard hand signal for stopping an approaching driver is to raise one hand (or both) with the palm facing the driver, held up like a “stop” gesture. In a typical multiple‑choice question, the correct option will be the one that says something like:

• “Raise one arm straight up with the palm facing toward the approaching driver,” or
• “Hold up one or both hands, palm toward the driver, to signal stop.”

If you see other options like:

• Waving the arm forward (that usually means “proceed” or “come ahead”), or
• Moving the arm up and down (often “slow down”),

those would not be the correct description for “stopping an approaching driver.”