Answer:
D: 4.6 x 
Explanation:
4.6 x 10^{9} = 4,600,000,000
Earth is approximately, 4.6 billion = 4,600,000,000 = 4.6 x 10^{9}
A. Earth
Geocentic, is a theory of Ptolemy. Where the Earth is the center of the solar system.
I believe that the answer is A, if I am not mistaken!
The largest organism is Fungi in Oregon (IT'S LIVING) and it covers roughly around 2,000 acres <span />