Question:Which aspect of Porter's Diamond explains how, in Italy, the leather footwear industry, the leather working machinery industry and the design services, which underpin them, benefit from one another?
  A. Firm strategy, structure and rivalry
  B. Demand conditions
  C. Related and supporting industries
  D. Factor conditions
  The correct answer is: Related and supporting industries.
  解析One successful industry may lead to advantage in related and supporting industries.
  At a regional rather than national level, this can also lead to the importance of clusters of organisations from the same industry or sector in the same location within countries.