In which situation is a reviewer allowed to express their opinion on the appraisal value?

The correct answer highlights the importance of adhering to established guidelines when expressing an opinion on appraisal value. Under the Uniform Standards of Professional Appraisal Practice (USPAP), reviewers are allowed to express their opinions regarding the appraisal value only when specific protocols and guidelines are followed.

These guidelines are in place to ensure a fair and objective evaluation of the appraisal while maintaining the integrity of the appraisal process. Reviewers must be able to support their opinions with credible evidence and detailed reasoning that aligns with professional standards. This reinforces the idea that appraisals should be conducted impartially, and any opinions regarding an appraisal should stem from a professional framework designed to foster consistency and reliability in the appraisal process.

In contrast, simply believing the appraised value is accurate does not justify the expression of an opinion, as this could lead to a lack of objectivity. Disagreeing with the appraiser's conclusion also does not allow for arbitrary opinions; such expressions must still be grounded in established guidelines to ensure professionalism and accountability. Similarly, while external appraisal standards may be relevant, the emphasis on following USPAP guidelines specifically delineates how reviewers can appropriately express their opinions on appraisal values.