HELP. WORTH 25 POINTS!
Struggling in quicksand creates a vacuum, which causes a person to sink. But the human body is more buoyant in quicksand than it is in fresh or ocean water, meaning that it is actually easier to float on quicksand than it is in a pool or the ocean. _after_ falling into quicksand, a person should slowly spread-eagle and allow the body to gradually come to a back-floating position. By moving cautiously in this position, the quicksand victim can then maneuver back to solid ground and out of danger.
A. after
B. instance
C. lastly
D. on the other hand
