What element in the excerpt from life on the mississippi most suggests that it is a realist text

The right answer for the question that is being asked and shown above is that: "C.It concerns itself with the trials of a daily occupation."

These are the following choices:
A.It has dialogue that is both witty and believable.
B.It contains well-rounded and diverse characters.
C.It concerns itself with the trials of a daily occupation.
D.It pays close attention to the physical details of a setting.

Ialso agree with your statement