Answer:
C. Slow down and drop back to a safe following distance behind the slowing car.
Step-by-step explanation:
the highway code contains the rules and regulations guiding the conduct of road users on a motorable roads. It is very important that a driver concentrates on the situation on the road whenever he/she is driving to reduce the event of avoidable accidents.
In the given scenario, since the car that changed lanes slows down due to small gap at its front, the appropriate thing to do is to slow down and follow by keeping a safe distance behind the slowing car.