Which of the Following Is the BEST Example of a Pathological

Which of the following is the BEST example of a pathological aging factor?

A) Joan carries a dominant gene that codes for the development of cancer.
B) Bob carries a recessive gene that puts him at risk for developing heart problems.
C) Luke has been severely obese since childhood, and he is now developing diabetes.
D) Charlene is developing osteoporosis as the result of normal aging processes.