Which detail from the passage best shows why Anthony's mother is concerned about him?

Which detail from the passage best shows why Anthony's mother is concerned about him?
"Slamming the door shut, he strode into the kitchen, threw his backpack on the floor, surveyed the neat pile of ingredients, and shook his head." (paragraph 2)
"And with that thought, I took my homemade casserole out of the oven, ready to talk to Anthony about the possibility of new summer plans." (paragraph 20)
"Don't you like my cooking, Anthony? I asked with a mock