I think you chose the wrong topic. But it doesn't matter, I'll help you though. The right one is <span>B. reflection and rotation. And it's no matter about the order of reflection. Other variants are completely impossible to be a right answer. So B is the only one right in my opinion.</span>
Briefly tie up what your introduction said. DO NOT add any new information. You can add what you have learned however that should be covered before the conclusion. The writer can also propose a question to its readers.