Passage Summary: We found T. rex bones with bite marks that only another T. rex could have made, but since these bites didn't happen during a fight while the animal was alive, they must have happened while it was dead.

Reasoning: T. rex was the only large carnivore in its area, and the bite marks on its skeletons could only have come from feeding or combat, though combat on live skeletons is ruled out.

Analysis: This 'Most Strongly Supported' stimulus functions like a logic puzzle. If the marks were made by a large carnivore, and T. rex was the only large carnivore around, then a T. rex must have made the marks. Since the marks were made during feeding or combat, but combat on a live skeleton is 'almost impossible,' we are left with feeding as the only viable explanation. This strongly suggests that T. rex scavenged or fed upon the carcasses of its own species.