The primary purpose of a property appraisal is to determine:

The correct answer focuses on the appraisal's primary role in identifying the true market value of a property. An appraisal is a professional judgment made by a qualified appraiser who considers various factors including the property's condition, location, comparable properties, and current market trends. This process is essential for establishing what a property is genuinely worth in the open marketplace, which can help buyers, sellers, and lenders make informed decisions.

Determining the true market value ensures that all parties involved have a realistic expectation of what can be obtained or required in a transaction. This value is crucial for various scenarios such as financing, selling, or investing in real estate.

Other options, while related to property valuation, do not capture the core purpose of an appraisal as distinctly as establishing the true market value does. The selling price of the property often reflects negotiations and market dynamics rather than a definitive assessment of value. Similarly, the tax value used for government assessments may not align with the market value, as it may be influenced by local taxation rules or outdated valuation methods. Lastly, potential rental income is a consideration for investment analysis but is not the primary purpose of an appraisal, which is centered on a property's overall market value.