What Must Occur for an Object to Be Considered a Main-Sequence

question 78

Multiple Choice

What must occur for an object to be considered a main-sequence star?

• A)Hydrostatic equilibrium ends.
• B)Nuclear fusion reactions in the core begin.
• C)Helium flash occurs in the core.
• D)Gravitational contraction begins.

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Definitions:

Indentured Servitude

A labor system where people paid for their passage to the New World by working for an employer for a certain number of years.

Tobacco Industry

Refers to the companies and activities involved in the cultivation, manufacture, and sale of tobacco and tobacco-related products.

Epidemics

Outbreaks of disease that spread quickly and affect a large number of individuals within a population, region, or community at the same time.

Indian Concept

This term is ambiguous without context; it could refer to philosophies, practices, or societal norms originating from or related to India.