Self-study
Several . █████████████ ███ █████████ █████ ██ █████ ███████ ███████ █████ █████ ████ ████ █ █████ █████████ █████ ████ █████ ██ ███ ████ ██ ███ ██████ ██ ███ ███ ████ █████ █████████ ██ █████ ████████ ███ █████ █████ █████ ████ ████████ ████ ████ ██████ ██ ████████ ███ ████ █████ █████ █████ ████ ████ ██████ ██████████ ██ ███████ ██ ███ ████████ ██ █ ████ ███████
Summary
There are several T. Rex skeletons found in North America with tooth marks that could only have been made by a large carnivore. T. Rex were the only large carnivores in North America when they lived. The tooth marks could only have resulted from combat or feeding. These tooth marks would have been impossible to inflict on the skeleton of a live animal.
Strongly Supported Conclusions
The tooth marks on the T. Rex skeletons are likely a product of other T. Rex’s feeding on T. Rex bodies.
14.
The information above most strongly ████████ █████ ███ ██ ███ ██████████
a
T. rex regularly ███████ ██ ██████ ████ ███████ ███████████
This is unsupported because we don’t have information about tooth marks being found on the skeletons of other carnivores or any other evidence of such combat.
b
At the time ██ ███ ██████ ██ ███ ██████ ███ ██████████ ██ ████ ██ █████ ███████████
This is unsupported because even though T. Rex appears to have fed on other T. Rex, we don’t know that this was common for other carnivores.
c
T. rex sometimes ███████ ██ ████████████
This is strongly supported because we know that the marks on the skeletons could only have come from other T. Rex’s, and they could only have been made during feeding on an already dead animal.
d
T. rex sometimes ███████ ██ ████████████ ███████
This is unsupported because the marks on the skeletons could only have been made on already dead animals, which precludes the marks being made during combat.
e
At the time ██ ███ ██████ █████ ████ █████ ██████████ ██ ██████████ █████ ████ █████ ████████
This is unsupported because we don’t know anything about the distribution of carnivores across other continents. The stimulus is confined to discussing North America.