The logical meaning of the sentence:
People in Denmark have developed advanced techniques for processing X and use them to recover 50,000 tons of Y annually. Moreover, from those 50,000 tons of Y new products are made.
A)
B) The option implies that the techniques are used on annual basis. This is illogical as per the sentence.
C) "which" refers to "50,000 tons of scrap metal" and must, therefore, use "are".
D) "...use them yearly..." commits the same
...
People in Denmark have developed advanced techniques for processing X and use them to recover 50,000 tons of Y annually. Moreover, from those 50,000 tons of Y new products are made.
A)
B) The option implies that the techniques are used on annual basis. This is illogical as per the sentence.
C) "which" refers to "50,000 tons of scrap metal" and must, therefore, use "are".
D) "...use them yearly..." commits the same
...
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