About Checks before driving off: seat, headrest, wheel, mirrors and seatbelt: which statement is WRONG?
The text literally says: check before EVERY trip.
You put on the seatbelt first and adjust your mirrors afterwards.
The headrest must sit flat behind your head; this gives you the best protection in a rear-end collision.
You put on your seatbelt before driving off, with no exception for road type or speed.
Explanation
trap: order reversal. Book p.209 - the text lists the order seat, headrest, steering wheel and mirrors, and only then 'and of course you put on your seatbelt before departure' as the last step