what is the best definition of marginal benefit?\no the possible income from producing an additional item\no…

what is the best definition of marginal benefit?\no the possible income from producing an additional item\no the price of producing one additional unit of a good\no the additional income gained from selling an additional good\no the financial gain from business activity minus expenses
Answer
Brief Explanations:
Marginal benefit is the additional gain from consuming or selling one more unit. It's about the extra income from selling an extra good. The first option is about production income not necessarily from selling, the second is about cost (price of producing), and the fourth is about profit (gain - expenses).
Answer:
the additional income gained from selling an additional good