Serbia is a multireligious country. The dominant religion is Orthodox Christianity (notably the Serbian Orthodox Church), but there are also numerous adherents of Islam (living mostly in Raška region (Sandžak) and the Preševo Valley), and Catholic Christianity (living mostly in northern part of Vojvodina), as well as adherents of other religious groups such are Protestant Christians, Jews, and others.
There is no such people as "Yugoslavians." Please specify: Bosnians, Macedonians, Croatians, Serbians, or Slovenians.
They practice Islam religion.
The religion that does not practice circumcision is Jainism.
No, Serbians are white people
They practice Roman Catholic religion
Buddhism is the religion. Buddhist practice Buddhism.
It is entirely up to you, how seriously you wish to practice your religion.
The religion that includes the practice of godparents is Christianity.
Serbians belong to the Slavic race.
they practice the religion of pakarah, a ancient religion that revolves around the sun as the centerpiece of life.
Europeans mostly study (practice) the catholic religion.
I guess you ment " what religion do hindu's practice?" If so, it is Hinduism.