Answer: b. Core competencies
Explanation: A company's core competencies are the characteristics of the company that makes them stand out from competition. In other words, they are combination of multiple resources, knowledge, expertise and skills that differentiates them in the marketplace thereby forming a basis for competitiveness.
To be classified as a core competency, the activity must provide superior value or benefits to the end-user, should be difficult to replicate or imitate by a competitor and sometimes rare.