Based on the quote what can best be inferred about why the united states felt it needed to take the action mcnamara mentions as a response to the placement of weapons in cuba

HERE IS THE QUOTE FOR ANYONE WHO WANTS TO GIVE THE ANSWER BUT DOESNT KNOW SAID QUOTE

“…[The} military options moved further toward a much larger strike which would very likely have to be accompanied by a land and sea invasion… Almost certainly [an invasion of Cuba] would have led to a Soviet military response somewhere in the world. Now before I leave this question, let me go back and say there was one other military alternative which was considered at the time, and that was a quarantine [blockade], and that of course is what the President decided on. It was believed that this would be seen by Khrushchev not in a sense as a military action, but as a message. It was meant to convey the President’s determination to see those weapons removed…”  

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answer; sociological imagination;

the answer is c. : )