In an iterative lifecycle model, which statement about testing activities is accurate?

The choice stating that for every development activity, there should be a corresponding testing activity is accurate in the context of an iterative lifecycle model. This model emphasizes the ongoing integration of development and testing processes throughout the project.

In iterative models, software development progresses through cycles or "iterations," and each iteration involves planning, coding, testing, and evaluation. As development activities occur, such as writing code or designing features, associated testing activities, like testing the new code or verifying the designed features, are conducted simultaneously. This approach ensures that defects can be identified and addressed early in the development process, leading to greater efficiency and higher quality software. By linking testing closely with development, teams can better adapt to changes and quickly resolve any issues that arise, which is a core principle of iterative methodologies.

While other options touch on important aspects of testing, such as documentation, metrics, and test case management, they do not directly capture the essential relationship between development activities and their corresponding testing activities as effectively as the chosen answer.