To submit christmas candles

If these were generated by AI, yes.

If the asset depicts real, custom designed candles, you'll need to submit a signed property release by the artist who made them.

Yes you need to check the box. There are no people, and the property is fictional. When you click the box, the message depicted below is displayed.

I wouldn't think so, but I suppose candles could be considered works of art if they were created by an individual and not mass-produced by some machine. Try posting one or two and see. If a property release is required, the moderator will place it under the Pending tab to give you an opportunity to supply one.