Answer: Maturity
Explanation:
When a product gets to Maturity level, it will see its sales slow down. The sales will still be increasing but at a very low or stable rate.
At the growth state however, sales will be growing at a fast rate and so will profit.
This product is at the maturity stage because over the previous year, its sales have slowed down and are now increasing at a very low rate as a mature product would. In the past four years it was in growth based on the given figures but as of the last year, it had crossed over into maturity.