Here's why this sentence illustrates internal conflict:
* Internal Conflict: The conflict is within Sarah's mind. She's battling between her desire for change and her fear of the unknown.
* Two Opposing Forces: The sentence highlights two opposing forces within Sarah: her desire to quit and her fear of disappointing her family.
* Psychological Struggle: The phrase "chained to her desk" emphasizes the psychological struggle Sarah is experiencing. It's not a physical restriction, but an emotional one.
Let me know if you'd like to explore other examples of internal conflict!