When is the best time to signal your intention to change lanes?

Answer: C — Before changing lanes to give others warning

Signaling your intention to change lanes before actually making the maneuver is crucial for maintaining safety on the road. This practice provides a clear warning to other drivers about your intended actions, giving them time to react appropriately. By signaling in advance, you help prevent potential accidents or misunderstandings, as other road users can adjust their speed or position accordingly. This is a fundamental principle of safe riding and driving, ensuring that all participants in traffic are aware of one another's movements and can navigate safely.