One method for studying opportunity cost is to think in terms of
risk and ability.
pros and cons.
cost and benefit.
trial and error.

cost and benefit.

In economics, opportunity cost represents the benefit that a person misses out on when choosing one alternative over another. In every decision we make, there is a cost involved, even when the cost is only the inability of picking another alternative instead.

Opportunity costs are often overlooked, but they are important to consider when making any decision. A way in which we can study opportunity cost better is to think in terms of cost and benefit.

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.

what do you mean