Sally stated that recent stresses in her life are affecting her sleep and seemed to have triggered her appetite for sweets and comfort foods. which of the folleowing statements would be best to explain why her lack of sleep has increased her appetite? o a. the satiety hormone leptin increases with lack of sleep. o b. lack of sleep increases uncoupling protein. c. levels of neuropeptide y, a brain chemical that causes carthyhte cravings, are high and may crtreute to her sleep protiems. o d. lack of sleep increases levels of ghrein which stimutes appetite and decresses levels of lepen wich decreas appethe. e. lack of sleep decreases ghrelin levels.