Question #N19

The recent discovery of a new species of dinosaur, which has been named *Dreadnoughtus* by paleontologists, is particularly exciting because it is one of the most complete skeletons of a dinosaur ever found. The skeleton, discovered in Patagonia, Argentina, includes much of the animal’s skull, neck, back, tail, and legs, and it is estimated to have been about 85 feet long and 65 tons in weight. Such a large dinosaur has never been discovered before.

Which choice provides the best way to combine the sentences at the end of the passage into a single sentence?
A. Such a large dinosaur has never been discovered before, which is particularly exciting.
B. This is particularly exciting, because such a large dinosaur has never been discovered before.
C. It is particularly exciting because such a large dinosaur has never been discovered before.
D. Such a large dinosaur, which is particularly exciting, has never been discovered before.