What conclusion did the researchers from University of California San Diego reach regarding the best type of material to use for beach nourishment?

To find information about the conclusion reached by researchers from the University of California San Diego regarding the best type of material for beach nourishment, you can follow these steps:

1. Open a web browser on your computer or mobile device.
2. Go to a search engine, such as Google.
3. Type in "researchers University of California San Diego beach nourishment conclusion" or a similar search query.
4. Look for credible sources, such as news articles or research papers, that discuss the study conducted by the researchers.
5. Click on the relevant search results and read the summaries or abstracts of the articles to identify if they mention the conclusion reached by the researchers.
6. Once you find a suitable source, click on it to read the full article and obtain detailed information about the conclusion.

Please note that since I am an AI language model and cannot browse the internet in real-time, I cannot provide you with the specific conclusion reached by the researchers from the University of California San Diego as that would require up-to-date information. However, by following the steps mentioned above, you should be able to find the conclusion you are looking for.