(a) Lime stone
(b) Phyllite
(c) Quartzite
(d) Slate
Ans :- (c) Quartzite

Explanation :-
Metamorphic rocks are the igneous or sedimentary rocks, which have been changed due to either pressure or heat or both e.g. quartzite, marble, slate etc.
• Quartzite is a hard, non-foliated meta morphic rock which was originally sand stone which is converted into quartzite through heating & pressure. Quartzite has a very good weathering resistance, hardness & crushing strength.