Which statement about passengers on vehicles not designed to carry passengers is true?

• A. Passengers may ride in any trailer or cart if a seat is provided.
• B. Passengers may ride in igloos as long as a seat is provided.
• C. Passengers may ride in a trailer only if it's empty of cargo.
• D. A seat must be provided for each passenger.

Answer: (D)

Riding on vehicles not designed to carry passengers must have a designated seating arrangement for every person aboard. The main safety point is that a seat gives each rider a stable, protected place to sit and typically a way to be restrained, which reduces the risk of falling, shifting, or being thrown from the vehicle during movement. So, requiring a seat for each passenger ensures there is a proper place to sit and helps keep everyone safe.

The other ideas miss the essential safety rule: simply having a seat doesn’t automatically make a trailer or cart acceptable for passengers, and suggestions about igloos or cargo conditions don’t address the need for proper seating for every person.