At what level is high-density lipoprotein (HDL) considered a risk factor in the development of cardiovascular disease?
a. <200 mg x dL^-1
b. <110 mg x dL^-1
c. <60 mg x dL^-1
d. <40 mg x dL^-1
Answer: d. <40 mg x dL^-1
The American College of Sports Medicine, ACSM, multiple choice questions with their answers.