Peer reviews primarily contribute to which of the following outcomes?

Peer reviews are a key practice in software development and testing that focus on evaluating work products such as requirements, design documents, and test cases. The core purpose of these reviews is to identify defects early in the development process, which leads to improved overall quality.

By engaging multiple stakeholders in reviewing work, not only are errors caught before they propagate downstream, but there is also an opportunity for knowledge sharing among team members. This collaboration enables participants to discuss best practices, learn from each other's experiences, and enhance their understanding of the product. Consequently, the synergy created during peer reviews cultivates a culture of continuous improvement and collective learning, both of which are crucial for enhancing quality in software development.

The other choices do not align with the fundamental intent and benefits of peer reviews. For instance, increased defects in software would be counterproductive to the aims of peer reviews. More time spent on documentation does not inherently result from peer reviews; in fact, they may streamline documentation processes by providing clarity. Lastly, peer reviews foster collaboration among testers rather than diminish it, directly supporting teamwork and communication.