Answer:
Sedimentary Rock
Explanation:
A Rock are commonly known as minerals that has aggregated e.g mineral grains particles of other rocks, or organic matter.
Sediment are a tiny or Little portion of organic or inorganic material that are carried and deposited by wind, water, gravity, or ice and that accumulate in layers on the Earth's surface. Sedimentary Rock are commonly known as a type of rocks that is brought about from other rocks and minerals. Sediments includes Loose pieces of rock, sand, dust, clay, or dirt. Sedimentary rocks make up 5% of the Earth's crust but these rocks cover 75% of the Earth's surface.
Formation of Sedimentary Rocks
1. Weathering of pre-existing rocks
2. Transportation-(erosion) of sediment to a new site
3. Deposition of the eroded material
4. Compaction of eroded material and others.
A is the right answer because it is.
I think the answer here is neurons, the nerve cells
