GMAT Critical Reasoning (CR) | The fact that only one jumbo-jet manufacturer remains in the United

The fact that only one jumbo-jet manufacturer remains in the United States is of great concern to the President, since our national defense requires the ability to transport large numbers of people over great distances. Before the President publicly connected this issue to that of import quotas on jumbo jets, however, the domestic manufacturer raised the national defense issue in its publicity campaign for import quotas.

Which of the following, if true, contributes most to an explanation of the
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