Incorrect!

Why should you never wave people across at pedestrian crossings?

Another vehicle may be coming
Correct answer
They may not be looking
You selected this answer
It's safer for you to carry on
They may not be ready to cross

DVSA theory test explanation

If people are waiting to use a pedestrian crossing, slow down and be prepared to stop. Do not wave them across the road, because another driver may not have seen them, may not have seen your signal, and may not be able to stop safely.