Final answer:
Appraisers use comparison and contrast to evaluate similarities and differences, and classification and division to group elements into categories or divide them into parts.
Step-by-step explanation:
Appraisers use two main categories to evaluate the subjects of comparison: comparison and contrast, and classification and division. Comparison and contrast appraise two or more subjects by examining both the similarities (comparisons) and differences (contrasts) between them. This method allows appraisers to analyze and evaluate subjects in a comprehensive manner.
For instance, a car may be evaluated on the basis of seating, trunk storage, and ride comfort, while a phone might be judged on battery life, design, and camera quality. Classification and division, relate closely with each other. Classification groups various elements into larger, comprehensive categories, whereas division breaks down a single subject into its component parts. This strategy helps in understanding a subject or group by detailing the categories within it or the larger categories that various elements belong to.