with which types of income are you in danger of sometimes receiving less pay because of scheduling decisions…

Brief Explanations:

Salaries are typically fixed and not affected by scheduling decisions. Commissions depend on sales performance, not scheduling. Wages are often based on hours worked, and scheduling decisions can impact the number of hours an employee works, thus affecting pay. Tips can be affected by scheduling as it can influence the amount of customer - facing time and the volume of customers served.

Answer:

C. Wages, D. Tips