In a diagram of the circular flow of economic activity, businesses a. receive goods and services from productive markets. b. buy productive resources from resource markets. c. purchase goods and services from individuals. d. derive income from resource markets.

The correct answer is B.

Business have a double role in economy. They are the manufacturers that produce goods and services to satisfy the needs of consumers therefore, as the graph attached shows, they participate both in the factor and product markets:

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.