To summarize, food intake is influenced by metabolic activity in hypothalamic neurons and elsewhere; by hormones that signal the body's fat content to the brain; and by other homeostatic-need situations such as low blood glucose. All of these represent instances of negative feedback.
The first one is C and the second answer is C as well
She should do her best to sit him down alone, and see how he is feeling.
She needs to have a discussion with him, not an argument. If he is going through something, alcohol may just be an outlet.
The best thing is to make sure he's okay, and for her to lovingly express her concerns. =)
If I am not mistaking it would be 9-10 hours