Which of the following is NOT a stage in the product life cycle?

The product life cycle consists of several key stages that a product typically goes through from its introduction to the market until it is eventually phased out. The valid stages of the product life cycle are the Introduction stage, where the product is first launched; the Growth stage, where product acceptance increases and sales begin to rise significantly; the Maturity stage, where sales peak and market saturation occurs; and the Decline stage, where sales begin to fall as consumer interest wanes and newer products emerge.

The option labeled as Dominance does not represent a recognized stage within this cycle. While some products may experience a period where they dominate the market, this concept is not formally categorized as a stage within the product life cycle framework. Therefore, Dominance is not a valid stage, making it the correct answer to the question of which is NOT part of the product life cycle. Understanding these stages is crucial for marketers to strategize effectively throughout a product's availability in the market.