A curriculum that integrates various subjects around a central theme is called:

Curriculum design can vary significantly in its approach to organizing learning content. An integrated curriculum is the correct answer because it specifically refers to a design where various subjects are connected and explored through a common theme, project, or problem. This approach helps students see the relevance and interconnectedness of different fields of knowledge.

• A Subject-centered curriculum focuses on individual disciplines in isolation.
• An Activity-based curriculum emphasizes hands-on learning but doesn't necessarily integrate subjects around a theme.
• A Hidden curriculum refers to the unstated lessons, values, and norms learned from the school environment itself.