Final answer:
The features that are not included in the "introduction" stage of a product's life cycle are extensive promotion and advertising, and negative cash flow for most products.
Step-by-step explanation:
The features that are not included in the "introduction" stage of a product's life cycle are:
- Extensive promotion and advertising
- Negative cash flow for most products
In the introduction stage, the main focus is on developing the product and conducting initial product market research. The sales volume is typically low during this stage, as the product is being introduced to the market and gaining awareness.