The answer is good because well enough is not structurally correct.
Vengeance can become obsessive...
D is the best answer because Ptolemy was an ancient astronomer who had a great many of works and is considered by today's standards to be <span>a pro-astrological authority of the highest magnitude which is a pretty high and mighty standard considering. Also it just uses Ptolemy and describes him as a highest achievement astronomer and tells his story. He does not tell much about the era otherwise. C could also be a candidate because he is a specific astronomer and it talks about discoveries but A and B are not completely relevant.</span>
Answer:
The majority of background radiation occurs naturally from minerals and a small fraction comes from man-made elements. Naturally occurring radioactive minerals in the ground, soil, and water produce background radiation. The human body even contains some of these naturally-occurring radioactive minerals
Explanation:
