Most fossils are found in what kind of rock

Fossils are found commonly in sedimentary above all other rocks

I hope this helps!

Most fossils are found in sedimentary rocks

Fossils are more commonly found in some kinds of sedimentary rocks. There are many reasons that can contribute to the purpose of an organism being preserved as a fossil. Sedimentary rocks are comparatively softer than other rocks that is why fossils are preserved in them. Fossils are most common in limestones. That is because most limestones consist partly or mostly of the shells of organisms.

"d.) carbon dioxide and hydrogen sulfide"