(A) The froth flotation method is primarily used for the concentration of sulfide ores. Among the given options,$Galena$ $(PbS)$ is a sulfide ore. $Ca

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(A) The froth flotation method is primarily used for the concentration of sulfide ores. Among the given options,$Galena$ $(PbS)$ is a sulfide ore. $Cassiterite$ $(SnO_2)$ is an oxide ore,$Malachite$ $(CuCO_3 \cdot Cu(OH)_2)$ is a carbonate ore,and $Magnetite$ $(Fe_3O_4)$ is an oxide ore. Therefore,$Galena$ is the correct answer.