Final answer:
OPTION A.Astrology is not considered a natural science because it is not based on empirical evidence and doesn't follow the scientific method. Astronomy, which studies celestial bodies and phenomena empirically, is the true natural science.
Step-by-step explanation:
Astrology and astronomy both involve the study of celestial objects but have different approaches and purposes. Astrology is not regarded as a natural science because it is based on the belief that the positions of celestial bodies can influence human events and personalities. Unlike astronomy, which is a natural science that examines celestial phenomena through empirical, observational, and theoretical perspectives, astrology lacks empirical evidence and is not consistent with the scientific method.
Astronomy is concerned with understanding the universe and its contents, based on observations, data accumulation, and scientific theories. It involves the use of scientific instruments like telescopes to observe stars, planets, and other celestial objects to gather information about them. For instance, Hertzsprung-Russell diagrams are used in astronomy to categorize stars based on their luminosity and temperature, which requires precise scientific measurements.
In contrast, astrology deals with interpreting the supposed influence of the celestial alignment on human affairs without scientific backing. Therefore, the true natural science studying the stars is astronomy.