When Does a Star Become a Main-Sequence Star

question 137

Multiple Choice

When does a star become a main-sequence star?

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

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Definitions:

Acceptance

The act of receiving or taking something offered, or the process of embracing someone or something as adequate or suitable.

Genuineness

Authenticity in one's actions and feelings, often considered crucial in therapeutic settings for effective healing and connection.

Empathy

The capability to comprehend and empathize with someone else's emotions.

Humanistic Therapists

Practitioners of a psychological approach focusing on individual potential and stress personal growth and self-fulfillment.