Read the passage below. Use context clues to determine the meaning of the underlined word. The cabin's plank walls were supplemented with sheets of corrugated iron, its general shape suggested it's original design: square, with four tiny rooms opening onto a shotgun hall, the cabin rested uneasily upon four irregular lumps of limestone. Its windows were merely open spaces in the walls, which in the summer were covered with greasy strips of cheese cloth to keep out the varmints that feasted on Maycomb's refuse. a. humans c. children b. monsters d. animals