How does USPAP guide an appraiser in calculating discounts for multiple items in one assignment?

The correct answer highlights that USPAP requires the use of recognized methods and techniques when appraisers calculate discounts for multiple items in a single assignment. This means that while USPAP does not prescribe specific formulas for handling discounts, it does emphasize the importance of utilizing established practices that are widely accepted in the appraisal community.

This approach ensures that appraisers maintain professionalism and consistency in their work, as they rely on methodologies that have been validated and are in accordance with current standards. By promoting the use of recognized methods and techniques, USPAP allows flexibility for appraisers to apply the best practices relevant to the specific context of their assignments, leading to more accurate and defensible valuations.

In this context, the other options do not align with USPAP's principles. The suggestion that there are mandated formulas for discounts does not reflect USPAP's flexible stance on methodology. Stating that methods are specified only for mass appraisals ignores the broader application of recognized practices for all appraisal situations. Finally, the idea that discounts are altogether prohibited contradicts the standard practices in appraisal, where adjusting values based on discounts is a normal consideration.