The relative magnitudes of Db* and D1*d are most sensitive to_______(Where Db and D1 are the diffusivities through the grain boundary and defect free lattice and , d are the effective thickness and grain size)

The relative magnitudes of Db* and D1*d are most sensitive to_______(

1.	The relative magnitudes of Db* and D1*d are most sensitive to_______(Where Db and D1 are the diffusivities through the grain boundary and defect free lattice and , d are the effective thickness and grain size)
A.	Pressure
B.	Temperature
C.	Volume
D.	Composition
Answer» C. Volume

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