What is an example of a sedimentary rock?

✅Explanation:
Shale is an example of a sedimentary rock. Sedimentary rocks form from the accumulation and lithification of sediments (such as minerals, organic matter, or fragments of other rocks) over time. Shale is formed from fine-grained particles, primarily clay, that have been compacted and cemented together.

📌Other Options Explanations:
-b. Basalt: Basalt is an igneous rock. Igneous rocks form from the cooling and solidification of magma or lava.
-c. Gneiss: Gneiss is a metamorphic rock. Metamorphic rocks form from the transformation of existing rocks due to intense heat, pressure, or chemical activity.
-d. Slate: Slate is another type of sedimentary rock, a fine-grained metamorphic rock formed from shale due to directed pressure.

🛑 Additional Information::
The earth's crust is made up of various types of rocks, differing from one another in texture, structure, colour, permeability, mode of occurrence, and degree of resistance to denudation.

• All rocks may be classified into three major groups:
-Igneous Rocks,
-Sedimentary Rocks,
-Metamorphic Rocks.

• 1. Igneous Rocks:
-Igneous rocks are formed by the cooling and solidification of molten rock (magma) from beneath the earth's crust.
-Example: Granite, Gabbro, Basalt, etc.

• 2. Sedimentary Rocks:
-Sedimentary rocks are formed by the process of weathering and cementation or precipitation on the Earth's surface. 
-Example: Sandstones, Kankar, shales, limestones, Mudstones, laterite, etc

• 3. Metamorphic Rocks:
-Formed when rocks are subjected to high heat, high-pressure changes inside the Earth.
-Example: Gneissoid, slate, schist, marble, quartzite, etc.