Answer:
marginal benefits are equal to marginal costs.
Step-by-step explanation:
Marginal benefit is the highest amount a consumer will pay for an additional unit of a product.
Marginal cost is the change in cost as a result of producing an extra unit of a product.
At the point where marginal benefit is equal to marginal cost, optimal decisions are made at this point because every economic agent (producers and consumers) are satisfied and there's no incentive to move away from this equilibrium.
I hope my answer helps you