Answer:
The answer is B.
Step-by-step explanation:
The life cycle of a product has 5 stages. The first stage, which is introduction, consist of things such as the point of entry to the market, low number of customers. The second stage, growth stage, is where the product sales start to increase and more companies start production and enter the market. In the maturity stage, sales numbers reach their highest point and after that they begin to decrease along with the number of customers, towards decline.
So the answer is option B, growth.
I hope this answer helps.