Which of the following is true about core-periphery relationships? A. They cleanly divide all parts of the world in either core or periphery. B. They require that there is only one core area at a given time. C. They reflect only economic imbalances, not cultural or political ones. D. They operate on a variety of spatial scales.

D. They operate on a variety of spatial scales.

Explanation:

The model of core-periphery relationships represents the fact that how economic, cultural and political powers are distributed spatially among the dominant regions of the core, more marginal, dependent on the peripheral and semi-peripheral regions.

These core-periphery relationships operate on the variety of the spatial scales. The core includes the powers of the world and that of countries which consists of majority of wealth in the planet. The periphery includes those countries that does not include the global wealth.