Away to identify those elements in the product/service chain that uniquely add value is referred to as

a. the resources view.
b. value-chain analysis.
c. the five forces model.
d. supply chain management.

B. value-chain analysis.

Explanation:

According to the given situation, the most appropriate option is B. value chain analysis as the value chain analysis represent the activities that adds the value to the business organization. This concept is developed by Michael Porter in his book "Competitive advantage".

The value chain analysis comprises of the two activities

1. Primary activities: It includes activities like - inbound and outbound logistics, marketing sales and services, etc

2. Support activities: It includes those activities which helps in procurement, managing human resource, etc.

The resource view measures the efficiency and effectiveness of the available resources that helps the organization to assess competitive advantage

The five forces model shows the weakness and strengthens of the business organization  

And, the supply chain management deals with transforming the raw material into the finished products

answer; by looking at total product,marginal product,and changes in both after changes in inputs

answer; personality;