Answer: D. where each variation segues/goes directly into the next variation, unfolding as a single, extended movement Explanation: Variation is the little difference that exist between individuals. Continuous variation is a term used in genetics to explain the combination of different genes in a living thing forming as one single entity. Examples of continuous variation is height, weight, shoe size, etc. Basically, continuous variation has to do with a range of data from one point or the other which is different from discontinuous variation which has to do with distinct features such as eye color, hair texture or fingerprint.