Which of the Following Best Defines Fluency

Which of the following best defines fluency?

A) the ability to detect problems associated with the creative strategies
B) the extent to which an ad contains elements that are novel and different
C) the ability to generate a large number of ideas around a creative idea
D) the degree to which various elements of the ad are valuable to the customer
E) the ability to select the appropriate target market for a particular product or service