Answer:
Introduction Stage
Step-by-step explanation:
The product life cycle consists of five stages: development, introduction, growth, maturity, and decline.
In this case, Chrissy's product (the lipsticks) is at the introduction stage, which is second stage of the life cycle, coming immediatly after the development stage ends.
In the introduction stage, as the name implies, the product is introduced in the market. Advertising and marketing efforts are crucial at this stage because otherwise the product may be rejected, or simply not known enough, and not reach the growth stage.