Final answer:
The item that remains the same in both the flexible budget and the master budget is the total expected fixed costs because fixed costs do not vary with production or service levels.
Step-by-step explanation:
The item that will be the same for a flexible budget and a master budget is B. total expected fixed costs. Both flexible and master budgets include fixed costs because fixed costs do not change in response to the volume of production or services provided.
Variable costs and contribution margin can change since they depend on the actual level of output, which means they may differ between the two budgets. Revenues can also differ because a flexible budget adjusts for the actual level of activity, whereas a master budget is based on forecasted levels of activity.