Respuesta :
The correct answer is :
The echoing sound of his voice shows his excitement that his brother is communicating.
The narrator has problems accepting the idea that his brother is different. He is not only an invalid but he also has a developmental disability. The narrator is ashamed of his brother and wants to kill him by smothering him with a pillow. Something changes one day, when the narrator watches his brother from under the bed. Seeing it as a joke, the disabled brother begins to grin which makes the healthy brother assume he understood his intended prank. The narrator is convinced that in order to understand it, his brother must have normal mental capacities, he is overjoyed about this fact and runs fast to his mother to tell her the good news.
Answer:
The echoing sound of his voice shows his excitement that his brother is communicating
Explanation: