Passage: When it is a school day , my children need to get up early to get ready . They have picked out the night before what they are going to wear and their clothes are laid out for them.They have to get dressed in school clothes and be ready to eat breakfast by 7:40 A.M . Then they have to brush their teeth . Their backpacks are by the door and they have to put their lunches into them before they are ready to go . It takes about 5 minutes to drive them to school , so we leave at that time to make sure they can still make it on time if we catch a train on the way . We drive to the school , and we watch closely for other kids who may be walking to school . When we get there , we pull into the drop-off lane and let them out in front of the building . Question: What did the children buckle in the car? Option1: seat belt Option2: the backpack
seat belt