The surroundings of something or someoneGroup of answer choicesCentral Business District (CBD)Environmental determinismEnvironmentCore-periphery

In this question, you are asked to consider the options that describe the "surroundings of something or someone." Here's a brief analysis of each choice:

1. Central Business District (CBD): This refers to the commercial and business center of a city. While it does relate to urban environments, it specifically pertains to the economic activities and business functions rather than general surroundings.

2. Environmental determinism: This is a theory that suggests that the physical environment, particularly the climate and terrain, actively shapes cultures and societies. It focuses more on how the environment influences human behavior rather than describing surroundings directly.

3. Environment: This term broadly refers to the surrounding conditions in which a person, animal, or plant lives or operates, including both natural and built aspects. It is the most direct fit for the concept of "surroundings."

4. Core-periphery: This concept describes the spatial structure of an economy, where the 'core' (developed regions) thrives and the 'periphery' (underdeveloped areas) is exploited. While it touches upon relationships between places, it doesn't directly define "surroundings."

Considering these definitions, the most appropriate choice that encapsulates the essence of "the surroundings of something or someone" is Environment. This term best reflects the overall context in which entities exist.