Answer: Product Life cycle
Explanation: Product Life cycle is a concept used to describe the various stages which a product will have to undergo from the time of introduction into the market till the time it will eventually be out of the market. Different products have different life cycle,the life cycle is determined by different factors. The shape of a product's life cycle is that of a BELL SHAPE
The stages include Introductory stage, Growth stage, Stabilization stage and decline stage.