Which term best describes keeping data and the procedures that operate on it together in one module?

• A. Abstraction
• B. Encapsulation
• C. Inheritance
• D. Polymorphism

Answer: (B)

Encapsulation bundles data and the methods that manipulate that data into a single unit, typically a class, and often hides the internal state behind a defined interface. This keeps the data and the procedures that operate on it together, promoting modularity and protecting the data from unintended changes. Abstraction is about focusing on essential features while ignoring details, inheritance is about building new classes from existing ones, and polymorphism lets different objects respond to the same operation in different ways. Encapsulation is the term that best describes keeping data and its related procedures together in one module.