Which of the following is the GREATEST concern if user acceptance testing (UAT) is not conducted when implementing a new application?

While skipping UAT might allow some defects to slip through, UAT is primarily about validating business requirements and user workflows, not solely detecting technical defects which are typically addressed in earlier testing phases.

Data confidentiality issues are generally addressed through security testing and design principles, not primarily by UAT, which focuses on functional and usability requirements.

An increase in redundant processes might occur if the new application doesn't integrate well or isn't used effectively, but the core failure is not meeting the initial requirements for which it was built.

User acceptance testing (UAT) is specifically designed to validate that a new application meets the defined business requirements and is fit for purpose from an end-user perspective. Without UAT, there is a high risk that the application, despite technical functionality, will not align with user workflows or adequately support business objectives, leading to user dissatisfaction and operational inefficiencies.