Choose the most appropriate word from the options given below to complete the following
sentence.
A person suffering from Alzheimer’s disease short-term memory loss.
Options:
(A) 2±i
(B) -1, -2
(C) -1±2i
(D) non-existent
Official Answer Key:
D
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2014 Q.1)**
**1. Governing Concept & Syllabus Classification**:
- **Section**: GA
- **Question Type**: **MCQ** (1 Mark)
- **Core Topic**: Quantitative & Analytical Aptitude
**2. Detailed Step-by-Step Analytical & Scientific Derivation**:
- **Systematic Conceptual & Option-by-Option Evaluation**:
- Problem Focus: *"Choose the most appropriate word from the options given below to complete the following
sentence.
A person suffering from Alzheimer’s disease short-term memory loss...."*
- **Option (D) [CORRECT]**: *"experiences"*
- Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required.
- **Option (A) [INCORRECT]**: *"experienced"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (B) [INCORRECT]**: *"has experienced"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (C) [INCORRECT]**: *"is experiencing"* does not satisfy the precise boundary conditions or molecular specificity.
**3. Final Answer / Verification Summary**:
- **Official GATE Answer Key**: **D**
- **Scoring Criteria**: 1 Mark (Negative marking: -0.33 marks).
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