Question 9 Costs that a business does not incur, or that it can reduce, if it discontinues an activity are known as: relevant costs incremental costs a. b. C. avoidable costs d. actual costs. Question 10 Opportunity costs are: a. the profits that a business forgoes by following a particular course of action b. C. d. costs that need to be incurred if a business opportunity arises avoidable costs costs of holding excess cash to take advantage of opportunities