2 The human characters in the novel are just as captivating. The main human character, Kate Waterbee, is a typical thirteen-year-old. She is secretly angry with her parents because she is not allowed to have pets. Kate believes that “allergies would have at least evoked some sympathy. Unfortunately, her parents’ noses and eyes could handle a dog or a kitty. It was their worried minds that feared an animal whining at them all the time.” While pleased with their mellow daughter, Kate’s parents feared adopting a needy, demanding pet.
A synonym for the word mellow in paragraph 2 is

A) mild.
B) active.
C) bubbly.
D) serious.