Answer:
The answer should be D. From the remains of dead plants and animals.
The Saudi Arabia politics are take place in the context of a totalitarian absolute monarchy with some Islamic (Wahhabi Islam) lines, and the King is both the Saudi Arabia's head of state and absolute monarch (i.e. he is the head of government). The King also serves as the head of the Saudi royal family, the House of Saud, which is also why the country bears the name that it has.
<span>When applied to earth’s atmosphere, the greenhouse effect is related to the "Amount of Carbon dioxide in the Atmosphere"
Hope this helps!</span>