The Delaware Investments National Municipal Income Fund (ticker: VFL) is a mutual fund that primarily invests in municipal bonds issued by state and local governments in the United States. These bonds are used to fund public projects such as schools, roads, and hospitals. The fund aims to provide investors with a steady stream of tax-free income while also preserving their capital. It may also invest in other fixed-income securities, such as corporate bonds, to diversify its portfolio. This fund is suitable for investors seeking tax-exempt income and a conservative investment approach.