What must you not allow a passenger to do when you transport him on a motorcycle?

In the photo there is a touring motorcycle with a two-person seat. You must not allow a passenger you are carrying on a motorcycle to ride without a protective helmet - answer C.

The Road Traffic Act provides that the rider of a motorcycle and the person being carried are obliged to wear protective helmets while riding, and prohibits the rider from carrying a passenger in a way that does not comply with this rule - so you are responsible for your passenger's helmet just as for your own. Talking to you (answer B) is allowed, and with an intercom in the helmets it is even convenient; the passenger talking on the phone (answer A) is not forbidden either - the ban on holding a phone in your hand applies to the rider, not the passenger - although a sensible passenger holds on to the handles, not a phone. The passenger's helmet must be type-approved, must fit and must be fastened; before the ride you explain to the passenger how to behave: keep the feet on the footrests, lean together with you, and not make sudden movements. For a passenger without a helmet, you both get a fine.

Legal basis: Art. 40 para. 1 and Art. 45 para. 2 point 1 and 3 of the Road Traffic Act (Prawo o ruchu drogowym)