In earlier times farmers made cheese mainly to preserve perishable milk and to reduce its bulk :this was how the output of dairy herds could be shipped in this form to distant urban markets.
a)this was how the output of dairy herds could be shipped in this form to distant urban markets.
Wrong. "this" has no clear reference.
b) the output of dairy herds could, in this form, be shipped to distant urban markets.
Correct. he idea is that output of dairy herds in the form of cheese could
...
a)this was how the output of dairy herds could be shipped in this form to distant urban markets.
Wrong. "this" has no clear reference.
b) the output of dairy herds could, in this form, be shipped to distant urban markets.
Correct. he idea is that output of dairy herds in the form of cheese could
...
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