Select all the items involved in marginal analysis.

calculating the marginal cost of a choice

choosing the option that makes you worse off

randomly making a decision

figuring out the marginal benefit of an alternative

The change in net benefits when you switch from one alternative to another. The most important example is marginal analysis, a cost-benefit calculation that focuses on the difference between one alternative and the next alternative. Marginal analysis compares the consequences of doing one step more of something. Marginal cost is the extra cost generated by moving from one alternative to the next alternative.

The answer is figuring out the marginal benefit of an alternative