Answer: rare; costly to imitate
Step-by-step explanation:
To have the potential to become sources of competitive advantage, resources and capabilities must be non-substitutable, valuable, rare and costly to imitate.
Competitive advantage simply has to do with the factors or the resources that are available to a particular company that allows the company to produce products that are cheaper and.bettee than its counterparts. This helps the company make more sale and more revenue.
The resources must not be one that can be easily copied by others. It must also be valuable and rare.