A. It says in the passage that they declined the preposition
Answer:
The Bone Wars is an episode in the history of paleontology that led to the discovery of some of the most famous dinosaurs.
Explanation:
The rivalry between Cope and Marsh was what led them to commit illicit acts and even destroy several dinosaur bones in order to "destroy" each other.
They began to collect fossil bones, and hidden from Cope, Marsh had paid for the bones to easily reach him.
Although both were great scientists, instead of working together they attacked each other in a public way.
However, this enmity helped to discover large species such as Diplodocus or Anisonchus Copehater.
Finally, the one who "won the war" was Marsh, who found 80 new species of dinosaur, while Cope found 56.
