Answer:
.c. related and supporting industries/complementors.
Explanation:
Porter's Diamond is an economic system formulated in his book The Competitive Advantage of Nations by Michael Porter.
Frequently, the instrument is used to analyze the external competitive environment which helps businesses evaluate the relative strength and clarify why some companies have become competitive or have regional benefits.
In this model, four variables that include:
Related and supportive industries are the inputs that drive a country's success. For example, Japan's raw material from suppliers of motor parts helps drive the Toyota motor industry's success.