Answer:
C) product life cycle
Step-by-step explanation:
A product life cycle has 4 stages:
- introduction: a new product is introduced to the market usually with a marketing campaign
- growth: the demand and the sales of the new product start to rise
- maturity: the product is well known with a steady demand but new competitors enter the market
- decline: the sales start to decline and the product loses market share
Unibronx's inverter is a mature product.