What is completed during the iteration structure?

The iteration structure is a fundamental concept in programming and systems analysis that involves repeating a specific process step until a certain condition is met. This allows for various tasks to be executed multiple times, providing control over how many times the loop runs based on dynamic conditions. For example, in a software development context, an iteration might be used to process user inputs until valid data is received, ensuring that the system continues operating without errors.

The other options do not accurately define the essence of an iteration structure. A data transaction typically refers to the transfer of data from one point to another and does not inherently imply repetition. A feedback loop involves evaluating the output of a process and using it to adjust future inputs or processes but doesn’t specifically describe a repeated action. A single module execution refers to the performance of one instance of a module, lacking the iterative aspect that defines the iteration structure. Thus, the definition involving repetition until a condition changes most accurately captures the purpose and function of an iteration structure.