Final answer:
Option (c), The protagonist of "Cathedral" is a nameless, judgmental man who develops through interaction with Robert, the blind man. The main conflict is internal, and there is no clear antagonist.
Step-by-step explanation:
The protagonist of "Cathedral" is a nameless man who is judgmental and disconnected from his feelings. Over the course of the story, he interacts with Robert, a blind man who is a friend of his wife. Through this interaction, the protagonist's character develops as he gains insight into his own life and learns to look at the world from a different perspective. The main conflict in "Cathedral" is internal, as the protagonist struggles with his own prejudices and discomfort with Robert. There is no clear antagonist in the story; instead, the protagonist's own biases serve as the opposition he must overcome.
The setting, a simple living room scene where majority of the story takes place, contributes to the story by providing a space for the interchange between the protagonist and Robert to unfold. The close confines and domestic nature of the setting also emphasize the intimate and transformative nature of their interaction. The secondary character is the protagonist's wife, who acts as a bridge between him and Robert, and whose past relationship with Robert adds layers to the story's dynamic.
The title "Cathedral" is primarily reflective of the personal growth the protagonist experiences—going from a state of metaphorical blindness to a form of enlightenment or broader vision, much like cathedrals are often associated with spiritual insight and vastness.