When joining a motorway, drivers must...

A)always stop at the end of the lane.
B)increase speed to merge quickly, with no obligation to give way to vehicles travelling on the motorway.
C)take into account the position, trajectory and speed of vehicles that may be approaching.Correct
A driver intending to use the acceleration lane to join a motorway or dual carriageway, as well as any other road with an acceleration lane, must observe the traffic and ensure at the beginning of that lane that they can do so without danger to other drivers and road users travelling on the carriageway, taking into account their position, trajectory and speed, and even stopping, if necessary, at the beginning of the lane in order to give way.