Question

Using environmental resources in a way that does not cause long-term environmental harm is like

spending only as much money as you earn.
borrowing money that you cannot pay back for a long time.
printing more money when you need it.
lending money to people who can’t pay it back.

Answer 1

spending only as much as you earn

This is somewhat of a sustainable model, in which the resources used are limited, just as in the case of limiting usage of environmental resources to prevent long-term harm.