Question

There are numerous kinds of shampoo, including vitamin-enriched, fruit-enhanced, color-sensitive, therapeutic, and so on. Shampoo that simply promises to clean hair, however, has seen declining sales, has little or no advertising, and has been phased out by most manufacturers. Shampoo that makes no other promise than to clean hair is in the _________ stage of its product life cycle.

Answer 1

The correct word is decline

Step-by-step explanation:

The shampoo market is growing and it presents different types of products with the aim to cleanse and improve the general features of the hair. Nowadays, shampoos represent specific products especiallly designed for people with allergies, dandruff, color-treated hair, etc.