Which of the following best defines a 'variable' in coding?

A 'variable' in coding refers to a storage location within a program that is associated with a name and can hold different types of data. This means that a variable can store values that may change throughout the execution of the program. The ability to hold data allows programmers to work with dynamic information, making variables essential for creating flexible and interactive programs.

When a variable is defined, its name serves as a reference point for accessing the stored data. This concept allows developers to write more readable and maintainable code, as they can refer to the variable name rather than using the actual data values repeatedly. Additionally, the data stored in a variable can be modified, which is crucial for operations such as computations, user inputs, and other interactions within a program.

The other choices do not encompass the full concept of a variable. A fixed value does not allow for the dynamic behavior that a variable provides, while a command that executes code describes a different programming element entirely. Lastly, an error in coding is unrelated to the definition of a variable. Thus, the definition that accurately captures the essence of a variable is that it is a storage location paired with a name that can hold data.