Critical Reasoning (CR) | Zoologist: Every domesticated large mammal species now in existence wa

Zoologist: Every domesticated large mammal species now in existence was domesticated thousands of years ago. Since those days, people undoubtedly tried innumerable times to domesticate each of the wild large mammal species that seemed worth domesticating. Clearly, therefore, most wild large mammal species in existence today either would be difficult to domesticate or would not be worth domesticating.

The zoologist’s argument requires the assumption that

(A) in spite of the difficulties encountered,
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