9. The principal advantage of zero-based budgeting is that: a. every expenditure is questioned. 13. every revenue source is questioned. c. all revenue-center accounts are \"zeroed ou \" at the end of every month. d. no revenue-center account is allowed to reach zero during the scal year. 10. The director of sales produces a report that details the number of room nights sold for each market segment by salesperson. This report is a critical part of which of the following steps in the marketing planning cycle? a. positioning the sales force b. evaluating the marketing plan c. implementing marketing objectives (1. validating the percentage-ofsales marketing budget