What items should not be left unattended in a car?

Answer: C — Children and pets

Children and pets should not be left unattended in a car because they can suffer from heatstroke or other dangers if left alone in a vehicle. It is crucial to never leave children or pets in a parked car, especially in hot weather, as temperatures inside a car can rise rapidly, leading to serious health risks or even fatalities. Therefore, ensuring the safety and well-being of children and pets should always be a top priority when driving or parking a vehicle.