Respuesta :

The author of "My Brother's Keeper" mainly develops Jamie’s character through 
his actions 
*dialogue and thoughts 
the narrators description 
other’s reaction to him 

Answer:

Dialogue and thoughts.

Explanation:

In the story "My Brother's Keeper," Jamie and Ted are two brothers who are quite different in personality and interests. Even though Ted is the younger brother, he often has to act older in order to help his brother Jamie. We mostly learn about the story from the perspective of Ted, while we learn about Jamie due to the dialogue and thoughts.