According to the material, which description matches a do-while loop?

• A. Do once, then check if true and either repeat or stop.
• B. Check condition before first execution and run only if true.
• C. The loop body is never executed.
• D. The loop iterates a fixed number of times without checking a condition.

Answer: (A)

A do-while loop runs the loop body first and then checks the condition to decide whether to repeat. That means it will execute the body at least once, which matches the description of doing something once, then checking if the condition is true to decide whether to repeat or stop. This guarantees at least one execution of the loop body.

The other ideas describe different looping styles: checking the condition before the first run is how a while loop behaves, which can skip the body entirely if the condition is false. The notion of the loop body never being executed contradicts do-while, since the body runs before any check. And looping a fixed number of times without a condition aligns with a for loop with a preset count, not a condition-driven do-while loop.