Classification – Odd one out (paired vs unpaired body parts) Among these body parts, three normally occur as paired organs in humans; one is not typically paired. Identify the odd one out.
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AIntestines
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BEyes
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CHands
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DEars
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ENone of these
Answer
Correct Answer: Intestines
Explanation
Introduction / Context:Human-body classification items often leverage anatomical pairing. Many organs/limbs occur in left/right pairs, while others are singular or not thought of as strictly “one per side.” Recognizing this biological regularity guides the choice.
Given Data / Assumptions:
- Eyes (paired), Ears (paired), Hands (paired)
- Intestines (not typically described as a single paired organ; rather a system of small and large intestines)
Concept / Approach:Check whether the noun denotes a standard lateral pair in humans (left and right counterpart). Reject items that are not lateral pairs.
Step-by-Step Solution:Eyes → left/right pair.Ears → left/right pair.Hands → left/right pair.Intestines → digestive organs, not a left/right pair → odd one out.
Verification / Alternative check:Substitute with “one of the two …”: works for eyes/ears/hands but not for intestines. The linguistic check mirrors the anatomical fact.
Why Other Options Are Wrong:
- Eyes → paired.
- Ears → paired.
- Hands → paired.
- None of these → there is one clear non-paired item (Intestines).
Common Pitfalls:Confusing “lungs” (paired) with “intestines” (a tract composed of parts). The test targets lateral pairing, not organ multiplicity.
Final Answer:Intestines