Which part of the ADT tells the programmer using it how to use it? the interface the scope resolution the implementation

The correct answer is **the interface**. ### Explanation: **Interface**: - **Definition**: The interface of an Abstract Data Type (ADT) specifies **what** operations are available to the programmer and **how** to use them without detailing **how** these operations are implemented. - **Purpose**: It serves as a contract, outlining the methods or functions that can be called, their parameters, return types, and expected behavior. This abstraction allows programmers to use the ADT without needing to understand its internal workings. **Scope Resolution**: - **Definition**: Scope resolution is a feature in some programming languages (like C++’s `::`) that allows access to identifiers within a particular scope. - **Relevance**: It’s related to how names are accessed in different contexts and doesn’t directly inform the programmer about how to use an ADT. **Implementation**: - **Definition**: The implementation refers to the actual code and data structures that realize the ADT’s functionality. - **Relevance**: While crucial for the functioning of the ADT, the implementation details are typically hidden from the programmer using the ADT. This encapsulation ensures that changes in the implementation do not affect the code that relies on the ADT’s interface. ### Summary: The **interface** is the part of the ADT that communicates to the programmer **how to use** the ADT, specifying available operations and their usage without exposing the underlying implementation details.