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Q: Which of the following is indicated by the colour of a star?
  • A. Weight
  • B. Distance
  • C. Temperature
  • D. Size
Correct Answer: Option C - The colour of a star mostly indicates the star's temperature and it can also suggest the star age. Class O stars which are blue in colour are the hottest and class M stars which are red in colour, are the coolest.
C. The colour of a star mostly indicates the star's temperature and it can also suggest the star age. Class O stars which are blue in colour are the hottest and class M stars which are red in colour, are the coolest.

Explanations:

The colour of a star mostly indicates the star's temperature and it can also suggest the star age. Class O stars which are blue in colour are the hottest and class M stars which are red in colour, are the coolest.