Answer:
B. is a particular set of institutional arrangements and a coordinating mechanism used to respond to the economizing problem.
Explanation:
Economic system -
It is the system that is responsible for the resource allocation , production and the distribution of the services and goods , is known as an Economic system .
Economic system includes - the institutions of decision-making , agencies .
It works to deal with the problem related to the economy of a country or society .
Hence , the correct option is ( b ) .