He went through the terrorist attacks of 9/11, and helped change the government for the better (department of homeland security)
The major policy "grouping" of President John Kennedy in the US was "<span>C. the New Frontier," since this had a lot to do with making America more competitive against the USSR. </span>
The first one is definitely B, not sure about the others but im sure they can be found with a little bit of research, good luck!