Question

question 5
economics believe that the best decisions are made at the _____________.
○ margin
○ tradeoff
○ alternative
○ opportunity

Explanation:

A core principle in economics is that optimal decisions are made by evaluating marginal costs and marginal benefits, meaning choices are best analyzed "at the margin"—considering the incremental changes of an action rather than total values. Tradeoffs, alternatives, and opportunity costs are related concepts but do not fit the specific phrasing of this foundational economic principle.

Answer:

A. margin