To determine the main idea of the passage, it would help to have the actual text or context of the passage you're referring to. However, based on the options you provided, it seems the passage likely revolves around themes of love and possibly sacrifice or effort.
If the passage focuses on the shepherd's feelings and actions toward his love, option C ("The shepherd wants to work hard for his love") may be a strong candidate.
If you can provide more context or specific lines from the passage, I would be happy to help you identify the main idea more accurately!