Which Project Management (frame work) will be the best solution for an ongoing Projects. PMP, Prince2 or Agile?

Agile Frame work. Because its working based on continuos requirement. Examples e-commerce websites, Amazon, Flipkart & etc., there will be always offer, scheme, special discount and more things will be added based on their promotional activieis. So Agile is the right frame work which dealt and working with the project min 2 to max 8 weeks.