Read the quote from the US Constitution. The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved for the States respectively, or to the people.

Which type of powers is this describing?

Powers shared by both state and federal levels.
Powers implied within the Constitution.
Powers held by the states alone.
Powers clearly identified for the federal level.

formulating the initial idea for the policy

answer is c.

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.

i would say that the politicial parties from state to state varies.