Ashoe department carries more than 55 different styles of white sandals. this is a description of the shoe department's merchandise breadth retail diversity merchandise depth point-of-sale range service assortment

A shoe department carries more than 55 different styles of white sandals. This is the description of the Shoe Department's Merchandise Depth.

In a company, there may be different line of products, called as merchandise breadth. They may vary from each other. And within a single product line, there can be a variety within it. Like in a production factory of shoes, there are different style of shoes with different colors. So if the factory produces 55 or more pairs of different shoes in a single color, then it is said to be practicing the Merchandise Depth.

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

                                          hope it

the third answer is correct.