Unlike many machines that are perfectly useful in isolation from others, fax machines must work with other fax machines. Thus, in the fax industry, the proliferation of incompatible formats, which resulted from the large number of competing manufacturers, severely limited the usefulness—and hence the to adopt a common format for their machines.
What this question is testing
Your task
Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.
Common trap
Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.
Winning move
Predict what a right answer must do, then test each choice against the conclusion-evidence gap.
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