Answer:
B. related-linked strategy
Step-by-step explanation:
Related-linked diversification as a corporate-level strategy, refers to when a firm builds upon or extends its resources and capabilities to create value. A company using the related diversification strategy intends to develop and exploit economies of scope between its businesses.
In the given scenario ''the expansion allowed the businesses under the company to share a few of the common competencies in products, services, technology, and distribution.''
Obviously the company is using the related-linked strategy