What is the butterfly stroke technique?

• A. Both arms move together and legs perform simultaneous up/down movements.
• B. One arm at a time while legs do dolphin kick.
• C. Arms cross over the chest during recovery.
• D. Only legs drive movement.

Answer: (A)

The main idea here is the synchronized, two-part propulsion of butterfly: both arms work together in a single, simultaneous pull, while the legs perform a dolphin kick together in a coordinated up-and-down motion. This combination creates the distinct, powerful propulsion of the stroke: a wave-like body movement driven by the chest and hips, with the arms pulling under the body in unison and then recovering forward as a unit. The other descriptions don’t match butterfly: pulling with one arm at a time isn’t butterfly’s pattern, crossing the arms during recovery isn’t how the arms move in butterfly, and relying only on the legs ignores the strong, simultaneous arm action that characterizes the stroke.