In the context of a circular flow model:
- The inner loop typically represents the flow of goods and services from firms to households and the flow of consumer spending from households to firms.
- The outer loop typically represents the flow of factors of production from households to firms and the flow of payments from firms to households.
Given this, the arrow representing the flow of goods and services would be associated with the inner loop. Thus, the correct answer for the flow of goods and services is:
b. B