Final answer:
The traditional bread served during the Sabbath in Judaism is Challah, a special braided bread. Bread-making in the past was unpredictable due to reliance on wild yeasts. Abraham, according to the Hebrew Bible, originated from Mesopotamia.
Step-by-step explanation:
The traditional bread served during the Sabbath in Judaism is c) Challah. Challah is a special braided bread that is typically eaten on ceremonial occasions such as the Sabbath and Jewish holidays. Historically, bread-making involved capturing wild yeasts from the air to ferment the dough, making the process long and unpredictable. Many batches had to be discarded if they didn't ferment properly. This artisanal bread production contrasts with modern bread-making where commercially available yeast strains ensure consistency and reduce the chance of having to discard batches of dough.
As for the origins of Abraham according to the Hebrew Bible, he came from c) Mesopotamia. The biblical narrative describes his journey from his native city of Ur in Mesopotamia to the land of Canaan, following God's call.