After Richard Nixon was elected president in 1968, he attributed his victory to O the withdrawal of troops from South Vietnam. the support of antiwar activists. O the support of the "silent majority." O the success of his policies in Vietnam.

C.

Explanation:

President Richard Nixon was inaugurated as the 37th President of the United States on January 20, 1969.

After Richard Nixon was elected as a president in 1968, he attributed his victory to the 'silent majority.' The term 'silent majority' was used to refer to those large number of population that did not express their opinions openly.

Therefore, option C is correct.

C) The support of the "silent majority."

Explanation:

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d.prevent the spread of communism outside of eastern europe.