Answer: c.Reject the investment if it returns less than 15% ROI.
Step-by-step explanation:
Additional investments should yield incremental returns if they are to be accepted. In the previous year, Division A had an Return on Investment of 15%, when an additional investment is being considered, it must bring in more than that 15% if it is to be accepted.
Therefore, if an investment is to give a less than 15% ROI, it should be rejected as it is not bringing additional returns for the Division.