Final answer:
The most comprehensive type of appraisal report is the narrative appraisal report.
Step-by-step explanation:
The most comprehensive type of appraisal report is the narrative appraisal report. This type of report is typically used in real estate appraisal and provides a detailed narrative description of the subject property along with an in-depth analysis of its value. It includes information on the property's location, condition, market trends, and comparable sales. The narrative appraisal report is considered the most comprehensive because it provides a comprehensive assessment of the subject property's value and all the factors impacting it.