Correct!

At an incident, how could you help a small child who's not breathing?

Find their parents and explain what's happening
Open their airway and begin cardiopulmonary resuscitation (CPR)
Correct answer
Put them in the recovery position and slap their back
Talk to them confidently until an ambulance arrives

DVSA theory test explanation

If a young child has stopped breathing, first check that their airway is open and then begin CPR. With a young child, you may only need to use one hand and you should not press down as far as you would with an adult. Continue the procedure until the child is breathing again or until a medical professional takes over.