The statement that describes the importance of the Gulf of Tonkin Resolution was that It increased the military role of the U.S. in the Vietnam War.
This is was a resolution taken by the congress by authorizing President Johnson to take measures that are necessary to maintain international peace and security in southeast Asia.
Hence, the resolution gave the President the authority to expand the scope of U.S. involvement in Vietnam without a declaration of war
Threfpore, the Option A is correct..
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