What Is Happening Inside a Star While It Expands into a Subgiant

question 3

Multiple Choice

What is happening inside a star while it expands into a subgiant?

• A)It is fusing hydrogen into helium in the core.
• B)It is fusing hydrogen into helium in a shell outside the core.
• C)It is fusing helium into carbon in the core.
• D)It is fusing helium into carbon in a shell outside the core.
• E)It is not fusing any element;it is contracting and heating up.

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Definitions:

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A grammatical term referring to a form of a verb, typically used to indicate a completed action or condition, often used in perfect tenses.

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