Who Among the Following Is Likely to Be Motivated by an Intrinsic

Who among the following is likely to be motivated by an intrinsic factor?

A) Jean takes up a project management course to enhance her skills and secure a promotion during the appraisals in her organization.
B) Elisa takes up a marketing job hoping to become a manager in her company although she dislikes marketing.
C) Tyler, despite his fear of water, starts to learn swimming because he loves the challenge of overcoming his fears.
D) Jerry decides to stop watching TV for three months prior to his exams so that he can get good grades.