Main-Sequence Stars Can Be Divided into Those with More Than

question 163

Multiple Choice

Main-sequence stars can be divided into those with more than 75% of the mass of the Sun and those with less than this amount of mass.What is different about these two groups?

• A) The less massive group does not have enough mass to undergo nuclear fusion.
• B) Stars in the less massive group are all fully convective.
• C) Stars in the less massive group are all free floating bodies that have never been part of a binary system.
• D) Some of the stars in the more massive group have evolved off the main sequence, while none of the stars in the less massive group have done so.

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