What is not allowed regarding children in a pickup truck?

Answer: B — Riding in the cargo area

Riding in the cargo area of a pickup truck is prohibited due to significant safety concerns. The cargo area is exposed and lacks the protective structure of the cab, making it hazardous for anyone, especially children, to ride there. In the event of sudden stops, collisions, or bumps, a child in the back of a truck could be thrown out, leading to severe injury or fatality. Safety regulations are in place to protect young passengers, and riding in the cargo area simply does not meet those standards. In contrast, riding in the front seat may be permissible under certain conditions and age restrictions, while using seat belts and booster seats in the cab are necessary for proper safety when transporting children. These provisions aim to ensure that children are as secure as possible while traveling in vehicles.