100 points gets pls

[gt.03]the diagram below shows undisturbed fossils in a sedimentary rock. the picture shows three layers of rocks. the top layer has fossils of sea shells. the middle layer has fossils of fish. the bottom layer has fossils of leaves. which of these conclusions is most likely correct about the location from where the fossil was discovered?

it was a sea which was replaced by a forest.
it was a forest a sea replaced which.
it has many marine animals which feed on plants.
it has many marine animals which share a common ancestor.