What is a characteristic of a 4/8 time signature other than the number of beats?

A 4/8 time signature indicates that there are four beats in a measure and that the eighth note receives one beat. One of the key characteristics of this time signature is indeed that it prominently features eighth notes.

In 4/8, each measure can be subdivided into two groups of two eighth notes, making it particularly conducive for rhythms that are driven by eighth-note patterns. This allows for a lively and syncopated feel in the music, as eighth notes can be combined in various ways to create interest in the rhythm.

While half notes and whole notes can occur in a 4/8 time signature, they do not define the measure's primary pulse as the eighth notes do. The emphasis on eighth notes allows for greater flexibility and fluidity in rhythm, making option C the most accurate choice.