TOEFL Listening: ETS-TOEFL听力机经 - 92Q5T53M7TU3N3RZP$

Why does the professor mention societies that rely primarily on fishing? A. To imply that these societies generally have an egalitarian political structure B. To point out the widespread availability of fish as a food source C. To demonstrate why fishing should not be included in the same category as hunting D. To argue against the claim that hunter-gatherer societies develop only simple organizational structures