Unlike many machines that are perfectly useful in isolation from others, fax machines must work with other fax machin...

kens on May 7, 2020

Why is D incorrect?

Why is D incorrect? Thanks in advance!

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Victoria on May 7, 2020

Hi @kenken,

Happy to help!

(D) is incorrect because it makes a generalization about all industries i.e. that some cooperation among manufacturers in the same industry is beneficial regardless of what industry they work in.

The passage directly contradicts this, stating that many machines are "perfectly useful in isolation from others." Therefore, cooperation would be neither necessarily nor beneficial in these industries.

Hope this is helpful! Please let us know if you have any further questions.