45. Some anthropologists study modern-day societies of
foragers in an effort to learn about our ancient
ancestors who were also foragers. A flaw in this
strategy is that forager societies are extremely varied.
Indeed, any forager society with which anthropologists
are familiar has had considerable contact with
modern, non-forager societies.
Which of the following, if true, would most weaken the
criticism made above of the anthropologists’ strategy?

(A) All forager societies throughout history have had
a number of important features in common that
are absent from other types of societies.

(B) Most ancient forager societies either dissolved
or made a transition to another way of life.

(C) All anthropologists study one kind or another of
modern-day society.

(D) Many anthropologists who study modern-day
forager societies do not draw inferences about
ancient societies on the basis of their studies.

(E) Even those modern-day forager societies that
have not had significant contact with modern
societies are importantly different from ancient
forager societies.

看来看去，愣没弄明白到底在说啥。