Answer:
D. Maturity stage
Step-by-step explanation:
Most products in the marketplace are in the maturity stage of the product life cycle.
There are four stages in the product life cycle:
1. Introduction stage: This is the stage where awareness is created about a new product in the market. Consumers are made to the aware of a new product by advertisement and marketing.
2. Growth: After awareness has been created for the product, there is an increase in firms expansion and demand.
3. Maturity: This is a stage where firms realise more profits due to
reduction in cost of production and marketing.
4. Decline: When the firm start making more peofits, other firms will join the industry leading to competition. This may lead to the product declining if it can't compete in the industry.