According to the Study Conducted by Chaput, Després, and Tremblay

According to the study conducted by Chaput, Després, and Tremblay in 2007, who among the following is most likely to have trouble losing weight?

A) Ryan, a carpenter, has joined a weight-loss program with his friends.
B) Keith, a teacher, consumes whole-grain foods as snacks.
C) Janice, a dietician, ensures that she gets moderate physical activity each day totaling approximately 30 minutes.
D) Raj, a software engineer, usually gets less than enough sleep.