(a) Shale and mica are metamorphic rocks
(b) Quartz is igneous rock
(c) Quartz is metamorphic rock
(d) Quartz and mica are only minerals

Ans :- (d) Quartz and mica are only minerals

Explanation :-
Igneous :- (Igneous Rocks areprimary rocks and they are formed by cooling,solidification of moltenearth materials, known as magma) e.g. Granite.

Sedimentary :-  (Sedimentary Rocks constituted of sediments, a material from wind or running water that settle down) e.g. limestone.

Metamorphic :- (When the original character of the rocks i.e., colour, texture and mineral
composition is changed, metamorphic rock is formed.) e.g. marble.
Quartz & mica are not rocks, they are only mineral.