Answer:
A. NGO's have more limited budgets.
Explanation:
The main reason why OPEC imposed an oil embargo on the US is because the US supported Israel in its “Yom Kippur War” with Egypt, and OPEC was made up of states that were against Israel, who was fighting the war against Egypt.
Answer: retrograde motion
Retrograde motion is an apparent change in the movement of the planet through the sky. It isn't real in that the planet doesn't physically start moving backwards in its orbit. It just appears to do so because of the relative positions of the planet and Earth and how they're moving around the Sun.