When multiple reviewers are designated, what is the only way for a step to be approved?

In scenarios where multiple reviewers are designated for a particular approval step in Adobe Campaign Classic, the approval process is structured to streamline decision-making. When choosing the option that states the first reviewer to respond approves it, it highlights the feature that allows for efficiency in the workflow. This means that as soon as one reviewer submits their approval, the step is considered approved without waiting for all reviewers to weigh in.

This approach can be particularly beneficial in situations where time is a critical factor and a consensus is not necessary. It facilitates a quicker progression through the approval stages and avoids potential delays that could arise from needing unanimous consent from all reviewers. The other options suggest a more complicated approval process, which is not suited for Adobe Campaign Classic's functionality in this context. Thus, the selected answer emphasizes the practical advantage of expediting approvals in a collaborative environment.