A placeholder for information that can change.

• A. Constant
• B. Class
• C. Variable
• D. Property

Answer: (C)

A variable is a named container for data that can change. In programs, you store values like numbers or text in a variable and you can assign a new value to it later, which is why it serves as a placeholder for information that can vary as the program runs. This differs from a constant, which holds a value that stays the same once set. A class is a blueprint for creating objects, not a generic holder of changing data, and a property describes an attribute of an object rather than a general variable for changing information. So the idea of a placeholder that can change fits best with a variable.