The correct option is Release Roadmap gadget.

The Release Roadmap gadget is built to show a consolidated timeline of versions that are scheduled for release in a configurable time window and it provides graphical progress indicators for each version so you can quickly see how close each release is to completion. This makes it the right choice when you need a view of all versions due in the next 45 days and a summary of progress toward completing the issues in those versions.

Projects is not correct because it focuses on listing or linking to projects and basic project information and it does not provide a timeline view of upcoming release versions with progress bars.

Sprint Burndown gadget is not correct because it tracks progress within a single sprint and shows burndown information for that sprint rather than showing release versions across a release window or a graphical summary of version completion.

Activity Stream is not correct because it provides a feed of recent activity and changes and it does not present a consolidated roadmap or graphical progress for scheduled releases.

Full AWS Practitioner Certification Question