Artisans and merchants are often referred to as "Burgesses" or "Burghers" in the context of medieval society, especially in Europe. However, none of the options you provided (Slavs, Magyars, Muslim Arabs, Normans) specifically denote artisans and merchants as a group.
If you are looking for an alternative group of people that included both merchants and artisans, I would encourage looking into terms specifically used in your study materials. That said, if you have to choose from the options given, none would be the correct identification for artisans and merchants specifically.