Question

in economics, what is meant by \optimal decisions are made at the margin\?
the idea of the margin is that all economic decisions are made at the very fringes of society.
the idea of the margin is related to making decisions while thinking about the benefits and costs of small changes in behavior.
the concept of the margin was initially developed in 2012 by professor marginus; research is still being done on how it can be used for decision - making.
the idea of the margin does not help compare trade - offs and is not relevant to decision - making.

Explanation:

"Optimal decisions are made at the margin" in economics refers to considering the benefits and costs of small changes in behavior when making decisions.

Answer:

The idea of the margin is related to making decisions while thinking about the benefits and costs of small changes in behavior.