Which meaning of 'area' describes a part of a surface or space?

• A. Geographical region
• B. A subject or field of study
• C. Part of a surface or space
• D. An abstract concept

Answer: (C)

Area in this sense is a specific portion of a surface or space—a defined region you can identify on a larger surface or plan. You might talk about the area of a park, the seating area, or the area around the exit on a map. This sense focuses on a concrete part rather than a broad idea: a geographical region describes a larger territory, a field of study is a subject area, and an abstract concept is something intangible. So, the best fit is the meaning that refers to a particular part or section of a surface or space.