Final answer:
An Intra-sector system is a system composed of multiple components within the same sector, related to areas like economic activity or industries, where trade or interaction happens within the same sector. Correct option is B.
Step-by-step explanation:
An Intra-sector system refers to a system composed of multiple components within the same sector. This could be related to economic sectors or industries, for instance. Considering the context of economic activity and international trade, sectors such as primary, secondary, tertiary, and quaternary are defined by their economic functions, from the extraction and production of raw materials to the manufacturing of goods and the provision of services and ideas. An intra-sector system, therefore, involves the interaction and trade of goods, services, or ideas that are all within the same slice of economic activity.
The intra-industry trade also aligns with the concept of an intra-sector system where international trade of goods occurs within the same industry. It is common to find that many different stages of producing a good, which can constitute an intra-sector system, occur in different geographic locations, also known as splitting up the value chain.