Classify each item correctly to complete the analogy: “Apple : Fruit :: Potato : ?” Pick the category that best fits the common classification used in such test items.

Introduction / Context:
Classification analogies require mapping an item to its common category. The first pair “Apple : Fruit” is straightforward. For “Potato,” standardized verbal-reasoning sets typically use the culinary/elementary category “root” (root vegetable), even though botanically a potato is a modified stem (tuber). We align with test-set conventions unless the item explicitly tests botanical morphology.

Given Data / Assumptions:

• Apple is commonly and botanically a fruit.
• Potato is commonly grouped as a root vegetable in everyday classification.
• The options do not include “tuber” but include “root.”

Concept / Approach:
Follow the exam’s conventional, non-technical classification mapping. The intent is likely “food item : everyday food category,” not strict plant morphology. Thus, “Potato : Root (vegetable)” is the expected response in this context.

Step-by-Step Solution:
1) Identify the relation type: item → everyday category.2) Map apple to fruit (baseline).3) Map potato to root (conventional food-category answer in such tests).

Verification / Alternative check:
Many general-knowledge and verbal-analogy keys accept “root” for potato. When options omit “tuber,” the safest standardized pick is “root.”

Why Other Options Are Wrong:

• Flower: Not the category for potato.
• Fruit: Incorrect for potato in common classification.
• Sweet: Taste descriptor, not a category.
• Stem: Botanically arguable (tuber), but not the typical exam key here given the choice set.

Common Pitfalls:
Over-applying botanical precision when the test expects general classification; always read the options and the exam’s level of granularity.

Final Answer:
Root