C) The stairs, because rhythm is repeated elements in photography, like books/kayaks/chairs in a row.
A) would be emphasis, not rhythm, because there's no repetition of the blue light (it's emphasis because the spiral staircase leads to the blue light). B) would be line, not rhythm, because there are no repeated elements. D) would be perspective, not rhythm, because being high up doesn't have anything to do with rhythm.
Strip lights Compartmentalized floodlights set up so as to
allow color mixing Low voltage and strip lights are commonly used as light
curtains and for color washes. It is also Known in the UK as a batten. It is
usually seen at the behind the actors backstage.
