Many of the prizes will be drawings - you can read more about those at this post. Quantity and quality go together, because the sources should follow the guidelines on the Sources help page. For example, it is not acceptable to list "1900 census record" or "birth certificate" as a source, so Quality counts if you want your Quantity to count.
Webhangout nr 1 https://www.youtube.com/watch?v=1f8E6loBWac prize drawing