Final answer:
The provided excerpts do not correspond to Willa Cather's My Ántonia; therefore, we cannot accurately determine how the action is initiated in the context of the question.
Step-by-step explanation:
The question seems to pertain to how the action in an excerpt from Willa Cather's My Ántonia is initiated. Here, we need to clarify which action is being referred to in the student's question, as the provided excerpts are not from My Ántonia and do not give clear context for that particular novel. Each excerpt from the text provided initiates the action in different ways.
For example, a man struggling against the cold and a dog's reaction in one excerpt, and a woman's interaction with her surroundings in another. The actions in these excerpts are initiated by environmental circumstances, the characters' decisions, and interactions with other characters. Without the specific context from My Ántonia, we can't accurately choose an option from a) to d).