Which of the following would be most effective in slowing the loss of biodiversity? 1) Requiring every country to keep a storage bank of plant seeds

2) Creating large parks/preserves in biodiversity hotspots

3) Freezing fertilized eggs of endangered animals in case the species become extinct in the wild

4) Setting aside small plots of land in a variety of ecosystems, such as forests, grasslands, and marshes

(plz help)​