In rocks, fossils are the preserved remains of long-dead plants and animals. Because they were created many millions of years ago, they are significant. This implies that they can discern the appearance of vegetation and animals as they were on Earth. Because they demonstrate how over time, living things have changed, fossils are strong proof of evolution.
Well fossils are the closest thing we can see that explains the past and if you get a species that lived million years ago and now as well you can try and compare what changed and make a hypothesis on why those changes happened and most scientists can see what the past looked like due to the millions of studies that have happened to see if the creature lived on land or in the sea.
The correct answer is D) There is no single topic sentence. a topic sentence is used to summarize what the writing is about, and there is no sentence that does that in this piece.
