When Does a Star Become a Main-Sequence Star

question 39

Multiple Choice

When does a star become a main-sequence star?

• A)when the protostar assembles from a molecular cloud
• B)the instant when hydrogen fusion first begins in the star's core
• C)when the rate of hydrogen fusion within the star's core is high enough to maintain gravitational equilibrium
• D)when a star becomes luminous enough to emit thermal radiation
• E)when hydrogen fusion is occurring throughout a star's interior

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Macroeconomics

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Post Hoc, Ergo Propter Hoc

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Fallacy

A flawed argument that uses poor reasoning or misrepresents evidence, often leading to incorrect conclusions.