Read this excerpt from The Way to Rainy Mountain. Great green and yellow grasshoppers are everywhere in the tall grass, popping up like corn to sting the flesh, and tortoises crawl about on the red earth, going nowhere in the plenty of time. Why does the author use the simile "popping up like corn to sting the flesh" in this excerpt?

to reveal that nature is harsh to humans

to convey a long span of time

to paint a picture of the heat of the summer

to show the movement of the grasshoppers