Which of the following ensures that an author can maximize their financial benefit from their work?

The correct choice is copyright laws because they provide authors and creators with exclusive rights to use and distribute their work. This legal framework allows authors to control how their creations are used, enabling them to sell, license, or otherwise monetize their work effectively. By ensuring that they can prevent unauthorized use or reproduction of their work, copyright laws help authors maintain the financial benefits associated with their intellectual property. This protection enhances the author's ability to earn income directly from their creations without fear of duplication or piracy.

Other options, while relevant to the broader discussion of intellectual property, do not provide the same level of comprehensive financial protection. The first sale doctrine allows the resale of copyrighted works, which can limit the original author's control and profit from subsequent sales. Public domain refers to works that are not protected by copyright, thus allowing anyone to use them without benefits accruing to the original author. Monopoly rights is a term that might relate to certain exclusive rights but does not specifically outline the protective measures that copyright laws extend to authors.