Where can you find easy and free assets for prototyping in Unity?

The Unity Asset Store is the correct choice for finding easy and free assets for prototyping in Unity. This platform provides a vast library of both free and paid assets, including 3D models, textures, audio files, and scripts. Developers and artists can use these resources to quickly prototype their projects without having to create every asset from scratch. The Asset Store also allows users to filter and search specifically for free assets, making it a convenient option for those looking to minimize costs during the development process.

The other options, while valuable resources, do not serve the same direct purpose. The Unity Project Store is not a recognized platform for asset sharing; rather, it is more focused on project management and collaboration. The Unity Community Hub typically features discussions and resources shared by users but lacks a central repository for downloadable assets. The Unity Learning Platform primarily offers educational resources and tutorials, which are great for learning and skill development, but it does not provide assets for building prototypes directly.