Where can blocks be utilized within the OutSystems platform?

In the OutSystems platform, blocks are reusable components designed to encapsulate user interface elements and logic. They can be utilized within screens and other blocks, allowing for modular design and the efficient reuse of code across different areas of an application. By inserting blocks into screens, developers can create complex UIs more easily and maintain consistency across their application. Additionally, using blocks within other blocks promotes a hierarchical structure in UI development, enabling more organized and maintainable codebases.

The other choices do not accurately reflect the functionality of blocks within OutSystems. Using blocks only in separate modules would limit their versatility, and they are not confined solely to service actions or database configurations. Blocks are fundamentally about UI component reuse and organization, making their primary context the screens and other blocks where they can be nested or composed.