Read the excerpt from “The Scarlet Ibis.”

But Mama, crying, told me that even if William Armstrong lived, he would never do these things with me. He might not, she sobbed, even be “all there.” He might, as long as he lived, lie on the rubber sheet in the center of the bed in the front bedroom where the white marquisette curtains billowed out in the afternoon sea breeze, rustling like palmetto fronds.

What best describes the effect of the sensory imagery used in this excerpt?