What type of JavaScript expression evaluates to true or false?

• A. Boolean
• B. Arithmetic
• C. Logical
• D. Conditional

Answer: (C)

Logical expressions are the type of JavaScript expressions that evaluate to true or false. They usually involve comparisons like x > 5 or y === z, and they use logical operators such as &&, ||, and ! to combine or negate boolean results. These expressions produce a boolean value that you rely on to control program flow, such as in if statements or while loops. That’s why this answer is the best fit: it’s specifically about expressions whose primary purpose is to yield a true/false result. By contrast, arithmetic expressions compute numbers, and the conditional (ternary) expression returns one of two values based on a condition, rather than inherently representing a boolean. A boolean value refers to the true/false data type itself, but the question is about the kind of expression that resolves to a boolean, which is best described as a logical expression.