Which of the following best describes a variable?

• A. It is a unique identifier that holds a static value
• B. It is a named storage for data within a program
• C. It is a function that returns data
• D. It is a term that indicates an unknown value

Answer: (B)

A variable in programming is fundamentally a named storage for data within a program. This means that when you create a variable, you essentially allocate a space in memory where you can store a value, which can be a number, a string, a list, or any other data type. The variable allows you to reference this space by using its name, making it easier to manage and manipulate the data throughout your program.

When you assign a value to a variable, you can easily change or retrieve that value by referencing the variable’s name. This dynamic nature is why it is termed a "variable" — its value can vary throughout the execution of a program, as opposed to being static or fixed. This characteristic is crucial in programming, as it allows for flexibility and enables the use of data that may change over time.

In contrast to the other options, while some contain elements related to variables, they do not capture the full essence of what a variable is in programming. For example, a unique identifier that holds a static value describes a constant more than a variable. Similarly, a function that returns data relates to function behavior rather than variable storage and manipulation, while a term that indicates an unknown value speaks to concepts in mathematics and logic rather than the specific functionality of