A Low-Mass Main-Sequence Star's Climb Up the Red Giant Branch

question 27

Multiple Choice

A low-mass main-sequence star's climb up the red giant branch is halted by

• A) the end of hydrogen shell burning.
• B) the beginning of helium fusion in the core.
• C) electron-degeneracy pressure in the core.
• D) instabilities in the star's expanding outer layers.

---

Definitions:

Multiple Perspectives

The approach of considering and integrating diverse viewpoints and angles in analysis, problem-solving, or understanding complex issues.

Adolescent Years

A developmental phase following childhood, typified by puberty, a search for identity, and increased autonomy, usually ranging from ages 13 to 19.

Zone of Proximal Development

A concept in developmental psychology referring to the difference between what a learner can do without help and what they can achieve with guidance and encouragement from a skilled partner.

Preschool Children

Refers to young children, typically ages 3 to 5, who are in the early childhood phase, prior to entering kindergarten.