How does a DO statement operate in Tosca?

• A. It runs the loop at least once before evaluating the condition.
• B. It repeats the loop without evaluating the condition.
• C. It behaves exactly like an IF statement.
• D. It runs only when the condition is true.

Answer: (A)

A DO statement implements a do-while looping pattern: the loop body executes first, and only after completing it is the condition evaluated to decide whether to repeat. This guarantees the body runs at least once, which is exactly what the statement describes in Tosca.

In practice, you’d use this when you want to perform an action and then check if you should continue looping, such as trying to interact with a UI element until a certain state is reached. The condition is checked after each iteration, so the loop may run once or multiple times depending on whether the condition remains true.

The other options don’t fit because they describe different behaviors: a loop that repeats without evaluating a condition would be an unconditional repeat (not how do-while works); equating the DO statement to an IF means no looping at all; and running only when the condition is true describes a standard conditional or a while-style loop, not a do-while loop which always executes its body at least once.