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

question 11

Multiple Choice

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

• A)hydrostatic equilibrium
• B)nuclear fusion reaction in the core
• C)protostar life begins
• D)hydrostatic equilibrium and nuclear fusion reaction in the core

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Definitions:

Plasma

The liquid component of blood, free from cells, consisting of water, salts, hormones, and proteins, critical for transporting nutrients, hormones, and proteins throughout the body.

Dissolved Gases

Gases that are mixed into a liquid, such as oxygen or carbon dioxide in water.

Component

A part or element of a larger whole, especially a part of a machine or system.

Platelets

Small, disk-shaped blood cells essential for blood clotting and wound healing.