The ore having two different metal atoms is

$(a)\;\text{Magnetites} \\(b)\;\text{Galena} \\(c)\; \text{Copper Pyrites.} \\ (d)\;\text{none}$

Explanation : Copper pyrites is $CuFeS_2$.
Thus, it has both Cu and Fe metal.
Thus, iron and copper both can be extracted from copper pyrites.
Hence c is the correct answer.
edited Mar 30