Question: John is learning how diet influences chronic disease prevention. According to the text, what role does diet play in modifying the onset and progression of diseases like heart disease, cancer, and diabetes? Need Assignment Help? a. Diet is the only factor that determines whether someone will develop heart disease, cancer, or diabetes. b. Diet can only prevent diabetes but not other chronic diseases. c. Diet can influence the timing of disease onset and progression, though it is not the sole factor in preventing these diseases. d. Diet has no impact on the onset or progression of chronic diseases