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The bulk modulus measures a material’s resistance to volume change when subjected to uniform pressure (hydraulic stress) in all directions, affecting volume but not shape.
Ref: NCERT Physics Textbook for Class XI and XII, Chapter: Current Electricity, Topic: Resistivity, temperature dependence and circuit analysis.
The steepness of the initial linear portion indicates a higher Young’s modulus, meaning the material is stiffer and requires more stress to produce a given strain. As per NCERT, applying relevant law/formula with correct units and sign convention leads to Higher Young’s modulus. This satisfies dimensional consistency and physical conditions given, so option D is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
Skin and lungs, is consistent with established principles of cell signaling, receptor pharmacology and cellular regulation. Experimental measurements of binding parameters, genetic loss-of-function studies and pharmacological interventions all converge on the same interpretation. Related options address neighboring concepts but do not satisfy the precise criterion stated in the question.
Ref: NCERT Biology Class 11–12 Alberts et al Molecular Biology of the Cell Lodish et al, Molecular Cell Biology Cooper & Hausman, The Cell Abbas et al., Cellular and Molecular Immunology (for immunology sections)
Elastin is the scientifically accurate answer to this question. Within the study of Protein, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of Elastin directly address what is being asked. Among the other options, Actin, Collagen, and Myosin do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 4
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