You Observe Several Massive Stars Within a Cool Nebula

question 90

Multiple Choice

You observe several massive stars within a cool nebula. Which of the following is the most likely explanation?

• A) The massive stars ejected some of their mass to form the nebula.
• B) The massive stars formed within the nebula.
• C) The massive stars are flying through the nebula.
• D) The massive stars have reduced the temperature of the nebula's gas.

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Definitions:

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