When must you signal a turn?

Answer: B — At least 100 feet before a turn

Signaling a turn at least 100 feet before the maneuver is required to ensure that other road users are aware of your intentions. This practice enhances safety by providing adequate notice to drivers, cyclists, and pedestrians, allowing them to react appropriately. Signaling well in advance gives other road users enough time to adjust their speed or position, which is particularly important in maintaining safe driving conditions. This rule applies to all driving situations, not just in residential areas or in the presence of traffic, promoting consistent communication on the road.