Answer:
d. advanced; specialized
Explanation:
Porter's five forces model: It was proposed by 'Michael Porter', and is determined as a model that generally analyzes and identifies five different competitive forces that often shape every single industry and therefore helps to describe a particular industry's strengths and weaknesses. It has been used frequently to identify a particular industry's structure in order to describe "corporate strategy".
As per the question, the given statement signifies the advanced production factor as well as a specialized production factor.
