What ensures data can be passed to and from other modules in programming?

The correct answer is that a module ensures data can be passed to and from other modules in programming. A module is a self-contained unit of code that encapsulates a specific functionality, allowing for better organization and reuse within a larger program. By defining a clear interface through which data can be exchanged, modules promote modularity and separation of concerns.

In many programming languages, modules can contain functions, classes, or procedures, all of which can be invoked from different parts of the application or from other modules. This encapsulation and the use of interfaces enable modules to communicate with one another effectively, facilitating collaboration and integration within the overall software system.

Additionally, good practices suggest that modules should expose only what is necessary while keeping internal implementations hidden, which aligns with principles of abstraction and information hiding. This not only ensures data can flow between modules but also prevents unintended interactions, making the codebase more maintainable and easier to understand.