Use the data in the table to answer the following: Which among iron and mercury is a better conductor?
< p style="text-align:center"> < span style="font-size:14px"> Electrical resistivity of some substances at $20\,^oC$

Material	Resistivity $(\Omega \,m)$
Iron	$10.0 \times 10^{-8}$
Mercury	$94.0 \times 10^{-8}$

(A) The electrical resistivity of iron is $10.0 \times 10^{-8} \,\Omega \,m$.
The electrical resistivity of mercury is $94.0 \times 10^{-8} \,\Omega \,m$.
Since the resistivity of mercury is higher than that of iron, mercury offers more resistance to the flow of electric current.
Therefore, iron is a better conductor than mercury.