The question asked was in a Medley Swimming race what stroke is swam first
(a) Butterfly (b) Breaststroke (c) Backstroke. Although the chaser said backstroke the answer given was Butterfly which was wrong. If butterfly was the correct answer he would end up crashing into the backstroke swimmer in the water on changover
If it's a Medley relay you're right. But an individual medley is the order Butterfly, backstroke, breaststroke, freestyle. I tihnk the question must have meant an individual medley.