(a) Quartz
(b) Felspar
(c) Mica
(d) None of these
Ans :- (a) Quartz

Explanation :-
The granite is a coarse-grained igneous rock composed mostly of quartz & feldspar etc. It forms from magma with a high content of silica and alkali metal oxides.
• It’s common in the earth continental crust.