Which grade levels are eligible to compete in the FBLA chapter events?

The correct choice indicates that students in grades 9 through 12 are eligible to compete in FBLA chapter events. This inclusion of all high school students, from freshmen to seniors, allows for a broad range of participation and engagement in business-related competitions and activities. The diverse grade range encourages younger students to develop their skills early and provides opportunities for all students to gain experience, network with peers, and enhance their understanding of business principles. This structure aligns well with FBLA's mission to foster leadership and career development among high school students, ensuring that a maximum number of individuals can benefit from the organization's programs.

In contrast, the other options limit participation to fewer grade levels, which could restrict the potential for involvement and engagement among students interested in business education.