Which rhythm is created by repeating red and blue alternately?

Correct answer: Alternating rhythm

Alternating rhythm is based on the repeated back-and-forth sequence of two different elements. When red and blue appear in turn—red, blue, red, blue—the eye recognises an organised alternation, so option A is correct. Flowing rhythm depends more on continuous directional movement, progressive rhythm requires gradual change, and random rhythm has no predictable sequence. The colour alternation is the key evidence.