What term describes identifiers that hold data that can change during program execution?

• A. Constants
• B. Arrays
• C. Variables
• D. Objects

Answer: (C)

The ability to hold data that can change during program execution centers on variables. A variable is a named storage location that you can assign a value to and then update it later as the program runs. This mutability distinguishes variables from constants, which are fixed once assigned. An array is a collection of values, and while you can modify its contents, the term describes a data structure, not a single mutable binding. An object is a complex data type with properties and methods; it can be mutable, but the general term for identifiers that hold changeable data is variable. For example, setting x = 5 and then later x = 10 shows how the value stored by a variable can change over time.