Answer:
B. raised barrier
Explanation:
Vehicles driving in the opposite direction on a multi-lane highway with opposite lanes separated by a raised barrier do not need to stop for school buses. This is because there is very little risk to students. As the lanes are separated by a raised barrier, the assumption is that children will not attempt to cross the lanes in this way. Therefore, it is unlikely for the vehicles on the opposite direction to hurt anyone if they do not stop for school buses. In fact, it is more possible for them to cause harm if they do stop.
