Which Part of the Hertzsprung-Russell Diagram Is Occupied by Protostars

question 72

Multiple Choice

Which part of the Hertzsprung-Russell diagram is occupied by protostars?

• A) to the left of the main sequence
• B) the band running from upper right to lower left
• C) the band running from upper left to lower right
• D) to the right of the main sequence

---

Definitions:

Density

The mass per unit volume of a substance, often used as an identifying property of various materials.

Mass

A measure of the amount of matter that an object contains; also a fundamental property of an object that determines its inertia and gravitational interaction.

Liquid

A state of matter characterized by a definite volume but no definite shape, allowing it to flow freely.

Density

The mass of a substance per unit volume, used as a measure of how tightly matter is compacted.