arvind910619 wrote:
So many and is this sentence makes it awkward .
I chose option D .
B is the answer though .
I have a question if we remove of from Option D from end will it be correct?
Please help
Yes, "D. revolution involved the large-scale introduction of enclosed fields, new farming techniques and crops, and the substitution of commercial for subsistence farming." is correct.
Notice that we need to make introduction and substitution || here.
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