One theory to explain the sudden extinction of all dinosaurs points to "drug overdoses" as the cause.
Evidence
Angiosperms, a certain class of plants, first appeared at the time that dinosaurs became extinct.
These plants produce amino-acid-based alkaloids that are psychoactive agents.
Most plant-eating mammals avoid these potentially lethal poisons because they taste bitter.
Mammals have livers that help detoxify such drugs.
Dinosaurs could neither taste the bitterness nor detoxify the substance once it was ingested.
This theory helps explain why so many dinosaur fossils are found in unusual and contorted positions.
Conclusion
The sudden extinction of all dinosaurs points to "drug overdoses" as the cause.
Evaluate
To weaken this argument the correct answer could provide an alternative cause, an example of animals eating certain angiosperms but not finding their fossils in unusual or contorted positions, or an example of animal fossils found in unusual or contorted positions but from animals known not to eat angiosperms.