It’s important to have vast knowledge in vocabulary when creating art/photography, so it’s easy to describe a certain style, or study of art, and analyze paintings and/or photographs & art in general.
I believe the best answer for this question is D, "rhythm." Let us consider what each of these terms mean. "Focal emphasis" means the element that draws your attention the most. "Contrast" involves elements that are very different from each other, usually juxtaposed together to create an effect. "Rhythm" means repetition, arrangement, or flow. "Composition" means the way something is composed. Hope this helps.
In order from top to bottom:
color, form, shape, space, line, texture, value.
Doing core workouts or anything really such as dancing or some sort of activity involving you getting active for at least 30min