Correct!

What should you do if a vehicle pulls out in front of you at a junction?

Swerve past it and sound your horn
Flash your headlights and drive up close behind
Slow down and be ready to stop
Correct answer
Accelerate past it immediately

DVSA theory test explanation

Try to anticipate what other drivers might do. Look and plan ahead so that you're ready to respond safely if a hazard develops. Be tolerant of road users who make mistakes.