Which sentence fails to use correct parallel structure?
A) Margaret carefully packed the picnic basket with hams, cheeses, condiments, and fruits.
B) Chuck wasn't sure what he did best in the kitchen: peeling, slicing, dicing, or cleaning.
C) The Manhood Physically Fit Course will challenge your tenacity, your drive, and your endurance.
D) The teacher told Harrison that he needed to find a new topic, do better research, and start citing sources correctly.