(a) Sedimentary rocks
(b) Siliceous rocks
(c) Metamorphic rocks
(d) Igneous rocks
Ans :- (c) Metamorphic rocks

Explanation :- 
Metamorphic rocks – Metamorphic rocks are formed igneous or sedimentary rocks as a result of the action of the earth movement, temperature changes, liquid pressure etc.
Exp. – Marble, Gneiss, quartzite etc.
Igneous rock- Igneous rocks forms when magma (beneath the surface) or lava (reaches the surface) cools and hardens.
Exp. – Granite, Basalt, trap etc.