Answer: c. Technical and scientific skills
Explanation: technical and scientific skills are an example of intangible resources. Intangible resources are assets that are not easy to identify, are typically embedded in unique routines and practices that have evolved with time, and are quite difficult for competitors and managers to imitate or account for. More examples of this kind of resource include: human resources (example, experience and managerial skills), innovation and technical/reputation (examples, technical and scientific skills, brand name etc.) resources.