The answer should be C) culture and personality studies
The process of indentifying the benefits and costs of different alternatives by examining the incremental effect on total revenue and total cost causes by a very small (just one unit) change in the output or input of each alternative. Marginal analysis supports decision-making based on marginal or incremental changes to resources instead of one based on total or averages.
Donald Trump, but Joe Biden is President-elect
Condensation comes before clouds in the water cycle.