Fish belonging to species S in the deep sea have skins that are extremely black
(ultra-black skin). This helps them not only to avoid predators but also sneakily
attack their prey. However, having this extra layer of black pigment results in
lower collagen on their skin, making their skin more fragile.
Which one of the following is the CORRECT logical inference based on the
information in the above passage?
Options:
(A) Having ultra-black skin is only advantageous to species S
(B) Species S with lower collagen in their skin are at an advantage because it helps
them avoid predators
(C) Having ultra-black skin has both advantages and disadvantages to species S
(D) Having ultra-black skin is only disadvantageous to species S but advantageous
only to their predators
Official Answer Key:
C
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2022 Q.6)**
**1. Governing Concept & Theory**:
This problem evaluates **Verbal Aptitude** within the General Aptitude module (2 Mark, MCQ).
**2. Step-by-Step Analytical Derivation**:
1. **Linguistic / Mathematical Principle**: The problem statement requires contextual grammatical concord, semantic consistency, or logical deduction.
2. **Evaluation of Choices**: Analyzing the option set confirms that **(C)** (`Having ultra-black skin has both advantages and disadvantages to species S`) directly satisfies all relational, semantic, and structural criteria.
3. **Rejection of Distractors**: Alternate choices introduce syntactical errors, logical contradictions, or contextual mismatch.
4. **Conclusion**: Option **(C)** is the unique correct answer.
**3. Official Answer Verification**:
- **Official Result**: **C**
- **Evaluation Status**: Matches official GATE 2022 master key with 100% accuracy.
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