Can CC0 assets (textures, models etc.) be used when submitting content to the marketplace?

For example, if I made an RPG Starter pack with a lot of blueprint functionality (Inventory, Skill Tree etc.), can I use CC0 textures and sound effects etc. when selling the pack.

It’s my understanding that a CC0 license is free to use for all purposes, but I would like to clarify this before uploading anything.