Thuy, Who Is a Freshman in College, Found That She

Thuy, who is a freshman in college, found that she started gaining weight after spending a lot of her time with her roommate Gayle, who is overweight. Thuy's weight gain is best explained by

A) a lack of motivation that occurs when first starting to college.
B) a lower metabolism that occurs in late adolescence.
C) the adoption of her roommate's eating habits.
D) the minor depression or "college blues" that set in upon leaving home.