Which of the following terms means to move or twist from pain or embarrassment?

The term that means to move or twist from pain or embarrassment is "writhe." This word specifically conveys the idea of twisting or contorting the body, often in response to physical discomfort or emotional distress. When someone is writhing, it can be a visible indication of their suffering or discomfort, making it a powerful descriptor in both physical and metaphorical contexts.

In contrast, the other terms do not accurately capture this specific meaning. "Squirm," while also suggesting some form of twisting movement, typically refers to a more restless, fidgety action that may not necessarily be linked to pain or embarrassment. "Stagnate" implies a lack of movement or progress and does not relate to physical contortions at all. "Change" is a broad term that encompasses any alteration but is not tied to the specific actions associated with pain or embarrassment. Therefore, "writhe" is the most appropriate choice for this context.