What is software testing primarily concerned with?

Software testing is primarily focused on the planning, execution, and evaluation of software products to ensure that they meet the required standards of quality and functionality. This process involves creating test plans, designing test cases, executing those tests, and analyzing the results to identify defects or issues in the software. The goal is to verify that the software works as intended and to ensure that any potential problems are identified before the software is released to users.

This comprehensive process helps to enhance the reliability of software, improve user satisfaction, and ultimately contribute to the overall success of the software development project. The other choices, while related to the broader context of software development, do not capture the essence of what software testing is primarily about. Managing team dynamics, building new software features, and cost reduction are important aspects of software development as a whole, but they do not specifically define the focus and responsibilities within the software testing domain.