Q22 - Dinosaur expert: Some paleontologists

[MatthewS512]

I also picked C. However, I am coming up with reasons why it is not necessary. Please correct me if I am wrong. Answer choice C states that "Knowledge of "d" fossils and the earliest bird fossils are complete. I think it is an assumption to equate knowledge with the fossil record. If you walk into a museum and see a skeleton of a T-rex you can most likely say that knowledge of t rex fossils is complete. As in we know everything about those fossils. So by saying we know everything about d-fossils could just be saying about their structure or characteristics. Additionally, paleontologists have made many assumptions about dinosaurs as a whole that we can accept as true, but we have by no means have a complete record of all of the fossils out there. That would be a daunting task.

Hopefully, someone can confirm this for me.

[DaniaA265]

Hi there!

I'm sort of confused about answer choice C. Isn't it a defender assumption since it protects our argument from potential objections that could weaken our conclusion? and if it is a defender assumption, doesn't that make it a necessary assumption since defender/bridge fall under necessary assumptions?