What are the acceptable methods of final disposition in Washington State?

In Washington State, the methods of final disposition are not limited to just burial or cremation; rather, they encompass a broader range of options that include donation to science. Donation to science allows individuals to contribute their bodies to medical schools or research institutions, which can be a meaningful choice for many people. This method serves educational purposes and advances medical knowledge, making it an important aspect of final disposition choices alongside traditional burial and cremation. By including donation to science, this option acknowledges the various ways individuals can choose to handle their remains in accordance with their values and beliefs.

The other methods of disposition mentioned in the question, such as scattering of ashes, may not be as universally recognized or regulated as a standalone option compared to the established practices of burial and cremation. Therefore, while those might be popular choices, they do not reflect the wider range of acceptable methods that includes the provision for donation to science in the context of final arrangements.