Open access policy refers to the practice of allowing unrestricted access to research articles, data, and other scholarly materials...

1. Gold Open Access: The author pays a fee to make their article freely available.
2. Green Open Access: Authors deposit a copy of their article in a publicly accessible repository.
3. Hybrid Open Access: Authors can pay to make their article open access, while other articles remain behind a paywall.

Overall, open access policies are aimed at promoting greater dissemination and impact of research...