There is evidence that the blue whale is the largest animal ever to have existed.

What would be the best way to express this information in an essay for a science class?

A. The blue whale is so enormous that it is probably the biggest animal ever.
B. Science shows that blue whales are way larger than every other animal in the world.
C. People think that blue whales are huge, much bigger than any other animal.
D. Research demonstrates that the blue whale is the largest animal ever to have lived.