There was loose, bulging linoleum on the floor. Marian felt
as if she were walking on the waves, but the nurse paid no
attention to it. There was a smell in the hall like the interior
of a clock. Everything was silent until, behind one of the
doors, an old lady of some kind cleared her throat like a
sheep bleating. This decided the nurse. Stopping in her
tracks, she first extended her arm, bent her elbow, and
leaned forward from the hips-all to examine the watch
strapped to her wrist; then she gave a loud double-rap on
the door.
"There are two in each room," the nurse remarked over her
shoulder
"Two what?" asked Marian without thinking. The sound like
a sheep's bleating almost made her turn around and run
back.
I
Which excerpt from the passage is an example of dialogue?