The most accurate explanation for why multiple early hearths of domestication and diffusion of plants and animals arose across different regions, such as Central America, the Fertile Crescent, the Indus River Valley, and Southeast Asia, is:
Domestication of plants and animals evolved in each hearth independently of one another as societies in each area learned and applied the process to local plants and animals.
This option recognizes that different societies in various geographical locations discovered and developed agricultural practices independently based on their unique environments, resources, and needs. Each region cultivated local species that were suitable for domestication, leading to multiple centers of agricultural innovation across the world.