What is the driver of a motor vehicle not permitted to carry in a house or boat trailer?

  1. Flammable materials
  2. Firearms
  3. Persons ✓
  4. Pets

Answer: C. Persons

The driver is not permitted to carry persons in a house or boat trailer while it is being towed.

Why this is the answer

The handbook's towing rules say nobody may ride in a trailer being towed, and it names house and boat trailers specifically. That makes people the prohibited load in this question. The restriction is about carrying a person, not about cargo such as flammable goods, firearms or pets, which the provided passage does not address.

Why the other answers are wrong

Remember it

Remember that a trailer being towed is for cargo, not for people to ride in.

Official handbook: Official MTO Driver's Handbook, Towing – No passengers

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.