Reverse formation means that when an individual's desires and motives are not accepted by his own consciousness or society, he suppresses them to the subconscious, and then displays them in the external behavior with the opposite behavior.
According to the above definition, which of the following is reverse formation?
Xiao Mei is losing weight recently. She is worried that she can't control herself in the face of the temptation of delicious food, so she doesn't attend friends' dinner recently.