Answer: There were 16 watertight compartments and a double bottom.
Contrast: Insects may have entered a cool home and earthworms would have escaped to under the cool soil.
Compare: They both may have gone to a chilly area from their instincts.
B. Synonyms–Antonyms are opposites, which is funny, because Antonym is a word for two opposite words. Lol for your teacher my friend!
A, the structure of the narrative