Choose the word that can substitute the given group of words.
Study of heavenly bodies

Correct option is B

The correct one-word for the given group of words is Astronomy.
Astronomy is the scientific study of celestial bodies like stars, planets, and galaxies.
Example: He studied astronomy to understand the mysteries of the universe.
Meanings of the other options:
· (a) Numerology: Study of numbers believed to influence human life.
· (c) Astrology: Pseudo-science dealing with star positions to predict future.
· (d) Stargazing: Casual observation of stars.