Validation involves which of the following?

Validation focuses on ensuring that the software product meets the intended requirements and fulfills its intended use from the end user's perspective. This process is about confirming that the correct product has been developed according to user needs and specifications. It assesses whether the built product aligns with what was actually intended and promised to stakeholders, thus ensuring that the product is not only functional but also appropriate for its users.

In the context of software testing, validation typically occurs after the development phase, often within the final stages of testing. It typically involves activities like user acceptance testing, where real users assess the software to verify that it meets their requirements.

This concept is distinct from the other options, which either relate to the quality checks during the build process, product development phases, or resource management, none of which directly address the core purpose of validation in software testing.