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(D) The resistivity values at room temperature $(20^{\circ}C)$ for the given materials are approximately:Copper $(ho_{C})$: $1.72 	imes 10^{-8} \ \

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$\rho_{M} > \rho_{A} > \rho_{C}$

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(D) The resistivity values at room temperature $(20^{\circ}C)$ for the given materials are approximately:Copper $(ho_{C})$: $1.72 	imes 10^{-8} \ \Omega \cdot m$Aluminium $(ho_{A})$: $2.82 	imes 10^{-8} \ \Omega \cdot m$Tungsten $(ho_{T})$: $5.60 	imes 10^{-8} \ \Omega \cdot m$Mercury $(ho_{M})$: $98.0 	imes 10^{-8} \ \Omega \cdot m$Comparing these values,we get $ho_{M} > ho_{T} > ho_{A} > ho_{C}$.Among the given options,the correct relationship is $ho_{M} > ho_{A} > ho_{C}$.

Consider four conducting materials: copper,tungsten,mercury,and aluminium with resistivity $\rho_{C}, \rho_{T}, \rho_{M}$,and $\rho_{A}$ respectively. Then:

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