Before you move into another lane, which set of actions should you complete?
Correct answer: Signal, check your mirrors, and glance over your shoulder.
Answer options
ASignal and check your mirrors; no head check is needed
BSignal and glance over your shoulder; mirrors are not needed
CSignal, check your mirrors, and glance over your shoulder Correct
Why
Your signal warns other drivers, the mirrors show traffic behind and beside you, and a quick look over your shoulder covers the blind spots the mirrors cannot show. Skipping any of these steps could leave a vehicle in the next lane unseen.