Select the most appropriate meaning of the given idiom.

To keep the ball rolling

To maintain progress

The most appropriate meaning of the idiom "to keep the ball rolling" is to maintain progress. It is used to describe a situation where someone is continuing an activity or process, especially in order to avoid stalling or losing momentum. For example, you might say "We need to keep the ball rolling on this project" or "The meeting was going well until someone brought up a controversial topic and it killed the momentum."

The other meanings of the idiom are:

• To lose an opportunity: to fail to take advantage of a chance to do something
• To make a scheme: to plan something that is dishonest or underhanded
• To enter into a dispute: to start an argument or disagreement