Defense Department analysts worry that the ability of the United States to wage a prolonged war would be seriously endangered if the machile-tool manufacureing base shrinks further. Before the Defense Department publicly connected this security issue with the import quota issue,however,the machine-tool industry raised the national security issue in its petition for import quotas.
Which of the following,if true,contributes most to an explanation of the machine-tool industry's raising the issue above regarding national security?
answer:C The machine-tool industry encountered difficulty in obtaining governmental protection against imports on grounds other than defense.