Read the poem "the great wave: hokusai."

it is because the sea is blue,
because fuji is blue, because the bent blue
men have white faces, like the snow
on fuji, like the crest of the wave in the sky the color of their
boats. it is because the air
is full of writing, because the wave is still: that nothing
will harm these frail strangers,
that high over fuji in an earthcolored sky the fingers
will not fall; and the blue men
lean on the sea like snow, and the wave like a mountain leans
against the sky.

in the painter's sea
all fishermen are safe. all anger bends under his unity.
but the innocent bystander, he merely
'walks round a corner, thinking of nothing': hidden
behind a screen we hear his cry.
he stands half in and half out of the world; he is the men,
but he cannot see below fuji
the shore the color of sky; he is the wave, he stretches
his claws against strangers. he is
not safe, not even from himself. his world is flat.
he fishes a sea full of serpents, he rides his boat
blindly from wave to wave toward ararat.

which is the best description of the poet’s treatment of the subject of the poem?

he uses humor to mock the subject.
he uses imagery to present the subject.
he uses structure to conceal the subject.
he uses tone to criticize the subject.