Answer:
a. The product requirements
Explanation:
product scope is the total varieties of products that the company provide.
Product requirements would be the value that a certain product need to has to satisfy the consumers.
The total varieties of product that produced by the company need to be able to satisfy the needs of a target market. This is why they both are measured against one another.
That being said, high varieties do not necessarily translate to high value. It actually would be more beneficial for the company to satisfy as many customers as possible with lesser variety of product.