Which statement accurately describes a double-sided arrow in logical expressions?

• A. Indicates a true if statement
• B. It can be reversed and still be true
• C. Denotes a condition that is always false
• D. Represents a strict inequality

Answer: (B)

A double-sided arrow in logical expressions is commonly known as a biconditional connector, often denoted as "if and only if." This means that for the statement to be true, both sides must either be true together or false together. The concept of it being able to be reversed and still remain true aligns perfectly with the nature of this logical relationship.

For instance, if we say "A if and only if B," this implies that A is true exactly when B is true, and conversely, B is true exactly when A is true. Therefore, you can switch the sides, and the truth of the overall statement remains intact, thus capturing the essence of the double-sided arrow as it functions in logical expressions.