Final answer:
If rigorous scientific research showed that physicians who use a clinically-based model provide better care and have better patient outcomes than those who use an evidence-based model, it would challenge the views of the economists and health experts in the passage.
Step-by-step explanation:
If rigorous scientific research demonstrated that physicians who use a clinically-based model provide better care and have better patient outcomes than those who use an evidence-based model, it would challenge the views of the economists and health experts, as represented in the passage. The economists and health experts in the passage argue for a hybrid model in which biomedicine works alongside and supports ethnomedicine for the most effective approach. This finding would challenge their assumptions and suggest that a clinically-based model may be preferable.