I looked into this test last year for my son.
It was very basic and the five questions asked were frankly stupid and nothing to do with towing, eg how do you check your oil level!
The test included an off-road reverse manoeuvre, a controlled stop, uncoupling and coupling of the trailer and driving on the road. You won't be expected to carry out the following exercises:
- emergency stop on the public road
- reversing round a corner
- reverse parking
- turning in the road
Loading is mentioned but more relevant to securing a load on a flat bed trailer.
“Caravan” was never mentioned.