Final answer:
The rate at which a Scrum team progresses sprint by sprint is known as the velocity.
Step-by-step explanation:
In Scrum, the rate at which a team progresses sprint by sprint is known as the velocity. Velocity is a measure of how much work a Scrum team can complete within a given sprint, typically measured in story points or other units of work. It represents the team's capacity to deliver value over time. The Scrum team uses the velocity to plan and forecast future sprints and to track their progress.