The kent state protest of 1970
a) is the only recorded war demonstration of the vietnam war era.
b) marked the final significant student protest during the vietnam war.
c) was met with violent force by the ohio national guard, killing and injuring students.
d) is significant because former president johnson participated in protesting the vietnam war.

C)was met with violent force by the Ohio National Guard, killing and injuring students.

Explanation:

Kent State shootings was an event at the University of Kent, Ohio, where a chaotic panorama took place between students and members of the National Guard on Monday, May 4, 1970, in which four students were killed and nine injured (one of they suffered permanent paralysis) at the hands of the National Guard, which shot at the students.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.

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