How far in advance must a driver signal before making a turn?

Answer: B — At least 100 feet

A driver must signal at least 100 feet before making a turn to ensure clear communication with other road users about their intentions. This distance gives sufficient time for other drivers, pedestrians, and cyclists to react to the upcoming maneuver. Signaling is a key component of safe driving as it helps to prevent accidents by making the driver's intentions clear. The 100-foot requirement strikes a balance between being early enough to provide notice and not so far that it confuses other road users about which turn or action is being signaled. This standard is widely recognized in driving regulations to promote uniformity in signaling practices among drivers.