Older stars that are more original to the galaxy, reddish in color, and much cooler than their newer counterparts are classified as what kind of stars?
a. population ii stars
b. red dwarf stars
c. population i stars
d. brown dwarf stars

The correct option is B, Red dwarf stars.

Explanation:

Red stars are the coolest and most abundant kind of stars present in the milky way. They are also very small and cannot be seen by the naked eye of a human. As the red stars are about 50% smaller than the sun, their surface remains cooler than the other stars. As a result of this cool surface, the red stars acquire the shiny red colour. Hence, the description of red stars matches with the hints given in the question.

population 2 stars

Explanation:

because they are older than population 1 stars  redder in color and are cooler and age slower

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kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.