When entering a motorway, at what speed should you travel?

When entering a motorway, at what speed should you travel?
A)At the maximum speed permitted on the motorway.
B)Always very slowly in order to enter safely.
C)At the appropriate speed that allows merging safely.Correct
A driver joining a motorway should try to do so at a speed appropriate to the road, taking into account the position, trajectory, and speed of other road users already on it, stopping if necessary. They should then accelerate to reach the appropriate speed in the acceleration lane and merge at the end of it.