High index fluids generally cause definite firming. The appropriate response is option A.
A fluid in physics is any liquid, gas, or other material that constantly deforms in response to an external force or applied shear stress. In other words, they are substances that cannot withstand any shear force given to them because they have zero shear modulus.
The continuity equation (or conservation of mass), the momentum principle (or conservation of momentum), and the energy equation are the fundamental tenets of fluid mechanics.
To learn more about fluids
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