On a tour of African countries, Mark contracts a bad case of traveler's diarrhea. Because he can't eat very much, his body starts to use energy sources other than carbohydrates. This would result in all of the following, except:_________

a. increased levels of urea in the blood
b. ketosis and a decreased blood pH
c. increased gluconeogenesis in the liver
d. lipid metabolism
e. glycogensis