"Keep the ball rolling" is an example

of which?

redundant wording
complex words
a cliche
independent adjective

Would it be a cliche?

Yes

Yes, "Keep the ball rolling" is an example of a cliche. To arrive at this answer, you can analyze the phrase itself. The phrase "Keep the ball rolling" is a common idiom that means to maintain or perpetuate a certain activity or momentum. It is a well-known and overused expression that has lost its original impact and effectiveness through repetitive usage. Therefore, it falls under the category of a cliche.