The correct answer is d) synergies.
Economies of scope refer to the efficiencies that arise from producing multiple products or services together rather than separately. This concept highlights how a company can reduce costs or increase value by leveraging its resources across different areas of its operation.
In comparison, economies of scale focus on cost advantages that a business obtains due to the scale of its operation, typically through increased production. Diversification indicates a strategy of entering new markets or sectors, while cooperation suggests partnership among businesses. However, the term that best encapsulates the idea of economies of scope is ‘synergies,’ as it implies that the combined efforts and resources result in a greater outcome than the sum of individual parts.