Answer:
Since the narrator did this as an act of selfishness, he should be blamed guilty for Doodle's death.
Step-by-step explanation:
During the course of the story, we could see many moments where the inner thoughts and feelings of the narrator are described to the reader. We also get a character named Doodle, which we know has a disability and was different. We know that the narrator had pride, and didn't want to be ashamed for having a brother different from others. We also notice that the narrator was sometimes cruel to Doodle, like when he threatened to leave him unless he touched his own coffin, made when he was expected to die at birth.
The narrator was selfish and prideful and wanted Doodle to be capable, and like others before going to school. When walking, he would quicken his pace or make Doodle swim till he turned blue, or run till he turned red.
In the last scene (which is the scene where Doodle dies), the narrator quickens his pace and runs through the pouring rain, despite Doodle's fear and tiredness. This shows us that the Narrator doesn't appreciate Doodle as he is, and wants Doodle to be someone normal, to not be ashamed.
Therefore, since the narrator did this as an act of selfishness, he should be blamed guilty for Doodle's death.
-kiniwih426