Economists assume that individual decisions will be determined by the output or production costs they create. the output or production costs they create. the trade-offs they creates. the trade-offs they creates. the societal demands associated with them.

the trade-offs they creates.

Explanation:

Trade-off is the opportunity cost of taking a particular decision

Opportunity cost of the next best option forgone when one alternative is chosen over other alternatives

For example, if there is a worker who values an hour of leisure at $10 and he is paid $20 per hour. If he has to choose between leisure and working. He would choose to work because the opportunity cost of not working (10) is lower when compared to the opportunity cost of leisure ($20)