Jaspen is a $45-$year$-$old professional firefighter. After a recent physical examination with Dr$.$ Cameron, Jaspen was diagnosed with high blood pressure and high cholesterol. Jaspen had also gained ten pounds since the previous doctor's visit. Dr$.$ Cameron explained that high blood pressure, high blood cholesterol, smoking, and an unhealthy diet are all important risk factors for heart disease. Because of a family history of heart disease $($one of Jaspen's parents died of a heart attack at $62),$ Jaspen decided to make some serious lifestyle changes, including enrolling in smoking cessation classes and meeting with a Registered Dietitian Nutritionist to discuss diet.

Dr$.$ Cameron diagnoses Jaspen with a disease or condition based on several factors. What observable or measurable factors might Dr$.$ Cameron consider?

a$.$ Epidemic

b$.$ Symptoms

c$.$ Signs

d$.$ Syndromes