Answer:
C
Explanation:
Auschwitz iii essentially implies the existence of an Auschwitz I & II - therefore making up 3 separate camps within the whole of "Auschwitz". This, in turn, supports the original premise of the "3 main camps".
It comes from serving others I believe.
C. The platypus, which is a mammal, has a bill like a duck and feet like an otter.
"which is a mammal" is an adjective clause. An adjective clause is used to describe a noun and usually begins with one of these words: that, when, where, who, whom, whose, which, and why. In this sentence, the adjective clause begins with "which" and describes the platypus, which is a noun.
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