সঠিক উত্তর হচ্ছে: op1, 2 and 4
ব্যাখ্যা:
Limestone, Dolomite and Coal are the examples of the sedimentary rocks. Organic sedimentary rocks are formed from the accumulation of any animal or plant debris such as shells and bones. These plant and animal debris have calcium minerals in them that pile on the sea floor over time to form organic sedimentary rocks. Examples include rocks such as coal, some limestone, and some dolomites.