Final answer:
The provided excerpts from 'Red Kayak' do not conclusively determine why Mrs. Diangelo goes to Washington, hence none of the given options can be accurately chosen.
Step-by-step explanation:
The question pertains to the book Red Kayak and why Mrs. Diangelo visits Washington. From the context provided, none of the options directly coincide with the reasons mentioned in the excerpts. It does seem that a trip to Washington could be linked to health or legal issues, as one excerpt mentions a doctor in Washington and another discusses legal matters. However, there is no clear evidence in the provided excerpts that connects Mrs. Diangelo's visit to Washington with any of the four options given.
The excerpts seem to be more related to themes of legal issues, medical concerns, and perhaps the environment, but they do not clarify Mrs. Diangelo's reasons for visiting Washington with certainty. Thus, without further context from the book, it is not possible to definitively say why Mrs. Diangelo goes to Washington based on the options presented.