What operational agreement allows Republic Airways to provide flights for major carriers?

The correct choice is a code-sharing agreement, which is a common arrangement in the airline industry. This type of agreement allows airlines to share flight services and routes, making it easier for travelers to book flights across different carriers while still benefiting from coordinated schedules and fare structures. Under a code-sharing agreement, Republic Airways can operate flights that are marketed under the branding of a major carrier, allowing seamless travel options for customers.

Through such partnerships, major airlines can expand their reach and network without having to invest in additional fleets or infrastructure, while Republic Airways gains business by operating flights under the umbrella of more recognized airline brands. This mutual benefit enhances passenger convenience and connectivity across the airline systems.

In contrast, the other options pertain to different kinds of business arrangements that do not specifically enable the operational function of providing flights under another airline's brand. A franchise agreement typically involves a different type of business model focused more on branding and business operations; an analytics agreement would focus on data sharing and insights rather than operational capabilities; and a joint venture agreement usually entails a more comprehensive partnership involving shared resources and investments rather than simply sharing flight operations.