Final answer:
The high-proof brandy made from plums in Serbia and Slovenia is Sljivovica. It is a traditional drink in this region. On the contrary, Retsina is a type of Greek wine, not a brandy.
Step-by-step explanation:
The high-proof brandy made from plums that is available in Serbia and Slovenia is called Sljivovica. Sljivovica is a traditional brandy in Serbia and Slovenia, made from distilled fermented plums. It is popular in many parts of Southeastern Europe. Retsina, on the other hand, is a type of Greek wine and is not made from plums or considered a brandy.
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