(a) Slate
(b) Granite
(c) Basalt
(d) Laterite
Ans :- (a) Slate

Explanation :-
Stratified rocks are consisting of different layers in its structure and these layers are separated by planes of stratification, Ex. Sandstone, limestone, shale, slate, marble etc.

• These planes are also called cleavage planes or bedding planes.
• These rocks can easily split up along these bedding planes.
• Majority of slates are formed by the dynamic metamorphism of shales.
• Their characteristic slightly change may or may not be parallel to the bedding planes of the original shales.