Final answer:
A characteristic with a constant pattern of stress/unstress that is neither accelerated nor decelerated is known as Steady Rhythm, and it is applied in poetry, music, and art.
Step-by-step explanation:
The characteristic described as moving in a constant pattern of stress/unstress, neither accelerated nor decelerated, is known as a Steady Rhythm. This concept is often found in poetry, music, and art, where it refers to a consistent, unchanging tempo or beat. To visualize what this means, think of a car rounding a bend at a constant speed, maintaining the same pace without speeding up or slowing down. Similarly, in poetry, the pattern of stressed and unstressed syllables creates the consistent beat or meter. An example of this would be traditional nursery rhymes, like "There was an old woman who lived in a shoe...", which are often spoken with a steady rhythm to emphasize their meter.