What is the value of a Boolean variable?

• A. A decimal number
• B. True or False
• C. A string of characters
• D. An integer number

Answer: (B)

The value of a Boolean variable is specifically constrained to two possible states: True or False. In programming, Boolean variables are used to represent truth values in logical operations and decision-making processes, such as conditionals and loops. They serve as a fundamental data type that enables programs to make decisions based on conditions.

Unlike other data types, such as decimal numbers, strings, or integers, Boolean values are not about representing quantities or sequences of characters but rather reflect a binary state that can help determine the flow of a program. For instance, a condition might check if a variable is equal to a certain value, returning either True or False based on the outcome of that check. This is crucial in control structures like if-statements, where the direction of the code execution may depend on the truth value of certain conditions.

In contrast, decimal numbers, strings of characters, and integer numbers represent different data forms and cannot be used in place of Boolean values in logical evaluations. Thus, the answer indicates the fundamental aspect of Boolean variables in programming.