Prismatic can mean "something in the shape of a prism" or "varied and arrayed colors". The best answer would be C.
<span>They are yield signs. The individual is legally obligatory to yield the right of way to trains. Slow down, look and listen or a train, and stop if a train go. Railroad cross buck signs are located at most crossings. If there is over one track, the sign under the cross buck will display the number of paths at the crossing.</span>
It symbolizes people spending money on stuff online, making companies grow and gain more money, People become addicted to shopping online and wasting money. They are supporting companies.