The narrator of “Sonny’s Blues” is a round and dynamic character. How do we know this? He is one-dimensional and remains the same throughout the story. He is multidimensional and remains the same throughout the story. He is multidimensional and changes throughout the story. He is one-dimensional and changes throughout the story.
"He is multidimensional and changes throughout the story" is how "round and dynamic" characters are often described, since they have higher levels of emotional complication and mental depth.
