Answer:
In paragraph 1, the story states "he found himself transformed in his bed into a horrible vermin". Vermins can consist of rats, mice, cockroaches, coyotes and weasels. In paragraph 1 it also states "he lay on his armor-like back". Now we know that this vermin can't be a rat, mouse, coyote, or weasel, which leaves us with a cockrach. Yes, ants are considered vermin, however, they do not have an armor-like back. Now we know some things about his transformation, he has a brown belly, an armor-like back, has many legs, and is considered a vermin. Let's compare it to a cockroach who has a brown belly, armor-like back, many legs, and is considered a vermin. Therefore, Gregor has become a cockroach.
Step-by-step explanation:
hope this hepled out.