The fluctuation of water depth at a pier is shown in the figure below. One of the following values gives the positive difference, in feet, between the greatest water depth and the least water depth shown in this graph. Which value is it?

F. 3

G. 6

H. 9

J. 12

K. 19

The fluctuation of water depth at a pier is shown in the figure below One of the following values gives the positive difference in feet between the greatest wat class=