1
2. Four friends are on a boating excursion on the Gulf of Mexico. One is parasailing in the air, above
sea level. Two are scuba diving in the water, below sea level. One is swimming on the surface, at
sea level.
Which integer represents the elevation of the friend who is swimming on the surface?
A.-2
B. O
C. 1
D.4

1 2 Four friends are on a boating excursion on the Gulf of Mexico One is parasailing in the air above sea level Two are scuba diving in the water below sea lev class=