Which metal is leached from its ore using $KCN$?

Consider the following reactions of metallurgy:
Ore '$X$' $\xrightarrow{\text{Roasting}}$ '$Y$' + $SO_2$ $\uparrow$
Ore '$Z$' $\xrightarrow{\text{Calcination}}$ '$Y$' + $CO_2$ $\uparrow$
'$Y$' + $C$ $\xrightarrow{1673 \ K}$ '$A$' (vapour) + '$B$' $(g)$
where '$A$' and '$B$' are respectively:

Thermite is a mixture of $X$ parts of ferric oxide and $Y$ parts of aluminium powder. $X, Y$ respectively are

$A$ metal has a high concentration in the Earth's crust and its oxides cannot be reduced by carbon. The most suitable method for the extraction of such metal is:

Which of the following metals is commercially reduced by the carbon reduction method and refined by the distillation method?

Predict the physical state of the metal $M$ obtained in the following reduction reaction shown by the Ellingham diagram: $MO(s) + C(s) \rightarrow M(?) + CO(g)$.