Answer:
By suggesting that only the go-cart is still up in the barn loft, not the coffin
Step-by-step explanation:
The given question refers to the story The Scarlet Ibis written by James Hurst. It tells the story of a boy (the narrator) whose brother, nicknamed Doodle, is born ill. The boy decides to teach Doodle how to walk, run, and do other things every healthy boy can do, but in the end, Doodle dies.
The excerpt you were given is the following:
Within a few months, Doodle had learned to walk well and his go-cart was put up in the barn loft (it's still there) beside his little mahogany coffin. Now, when we roamed off together, resting often, we never turned back until our destination had been reached, and to help pass the time, we took up lying. From the beginning, Doodle was a terrible liar and he got me in the habit.
The detail that foreshadows Doodle's death is that only the go-cart is still up in the barn loft. Doodle's parents expected him to pass away earlier than he did, and got him a mahogany coffin that was put away in the barn loft. Since the coffin is now gone, we can guess that Doodle died in the meantime.