What is this answerer: which word gives the correct meaning of the underlined word in the first paragraph?

after listening to lily grumble again about the food in the lunchroom, someone asked her why she always had to growl. "you like the fruit and the bread and the sloppy joes, don't you? "

lily nodded and said, "you're right. i didn't think about that."

a.
complain

b.
gobble

c.
cry

d.
explain