In paragraph 4 of this essay, the author____?
A)contrasts the pleasures of the Thames
with the hardships caused by the
Thames.
B)compares the immediate uses of the
Thames with the long-term uses of the
Thames.
C)compares the practical uses of the
Thames with the artistic uses of the
Thames.
D)contrasts the experiences of the poor at
the Thames with the experiences of the
rich at the Thames.