6. During the mid -1960s U.S. participation in the Vietnam War resulted in - a. public support for an expanded military draft b. mandatory rationing of consumer goods c. mass demonstrations by groups protesting the war d. national attention for a third-party presidential candidate

The correct answer is c. mass demonstrations by groups protesting the war.<br /><br />During the mid-1960s, U.S. participation in the Vietnam War led to widespread opposition and protests across the country. This resulted in mass demonstrations by various groups, including students, civil rights activists, and anti-war organizations, who opposed the war and demanded an end to U.S. involvement in Vietnam.