Answer
Tungsten.
Work Step by Step
To identify the metal, we need to find its conductivity.
We know that the current density is given by
$$J=\sigma E=\dfrac{I}{A}$$
So,
$$\sigma=\dfrac{I}{EA}$$
Plug the known;
$$\sigma=\dfrac{(9)}{( 0.0050)(1\times 10^{-4})}$$
Noting that the cross-sectional area of a cube is the same from any direction.
$$\sigma=\bf 1.8\times 10^7\;\rm \Omega^{-1}\cdot m^{-1}$$
Searching in Table 30.2 for the conductivities to find a match.
It is obvious that it is $\color{red}{\bf Tungsten}$.