(a) sedimentary rocks
(b) metamorphic rocks
(c) igneous rocks
(d) volcanic source
Ans :- (d) volcanic source

Explanation :-
Igneous rocks also known as primary, unstratified or eruptive rocks are of volcanic origin and are formed as a result of solidification of molten mass lying below or above the earth’s surface.

• During volcanic eruptions, ashes and sands are mixed with molten lava to form tuff lava.
• Tuffs have a glassy structure due to rapid cooling and are used as aggregate for light weight concrete.
• Pumice, Dolomite are light weight aggregate are obtained from volcanic source.