13. in the first paragraph, the author describes the stillness
of the sargasso sea as the cramer passes through it
primarily to emphasize that the stillness:
a. won't last long, for the sea will become rough
when the wind rises.
b. makes it easy for a passenger on the cramer to
spot oceanic islands that break the water's surface.
c. is in dramatic contrast to the power of what exists
on and under the seafloor far below.
d. makes it seem as if the cramer's wake is dividing
the unbroken expanse of water into two.