Final answer:
Miss Brill is a round character in Katherine Mansfield's story, exhibiting complex emotions and experiencing a significant change in perspective throughout the narrative.
Step-by-step explanation:
In the story "Miss Brill" by Katherine Mansfield, Miss Brill is considered a round character. Rather than being flat or one-dimensional, she experiences a range of emotions and possesses a complex personality that evolves over the course of the narrative. Miss Brill engages in people watching at the park, imagining herself as part of a grand play and considering everyone around her as actors. This activity reveals her loneliness and desire for connection. However, her illusion is shattered when she overhears a conversation that forces her to confront the truth about herself and her life, leading to a moment of profound self-realization. This change in Miss Brill's perspective shows her dynamism as a character.