Answer:
can be achieved by exploiting resources that are competitively valuable, rare, and hard to imitate by rivals
Step-by-step explanation:
A resource-based strategy is a form of the technique used by business managers to efficiently utilized the existing and valuable resources of the firm. These resources would be difficult to come by for the competitors such that it is hard for competitors to replicate. Thereby leading a sustainable or long term competitive advantage to the firm
Hence, in this case, the correct answer is A resource-based strategy "can be achieved by exploiting resources that are competitively valuable, rare, and hard to imitate by rivals."