Final answer:
The option that is not an indirect compensation is C. weekly wages, as this is a form of direct compensation paid to an employee for work performed.
Step-by-step explanation:
The question addresses the concept of indirect compensation, which refers to the non-wage benefits that an employee might receive from an employer such as health insurance, retirement plans, and other such benefits. In the context of this question, all options listed except for C. weekly wages, are examples of indirect compensation. Weekly wages are considered direct compensation because they are monetary payments made directly for work performed.
Options A (reimbursement for college courses), B (medical insurance coverage), and D (discounted rate for a fitness center membership) are considered part of an employee's total compensation package but are not paid out as wages or salaries; instead, they represent supplemental benefits.