The author's attitude toward Sophocles's statement is ______.

A．A good writer should clearly state all his assumptions.
B．Once we find assumptions, we will find the writer's problems.
C．We need not clearly express our assumptions in oral communication.
D．Major assumptions are important for both the writer and the reader.

A．identify an analogous situation
B．simplify and define the situation
C．vary the underlying assumptions of a description of the situation
D．determine what use would be made of the solution provided