Originally, vodka is made from which of the following?

Vodka is traditionally made from a variety of raw materials, and the most common among these include grains such as wheat, rye, and corn, as well as potatoes and sometimes even sugar beets. The choice of base ingredient affects the flavor and character of the vodka but does not define it strictly, as vodka can be distilled from virtually any fermentable material.

The presence of grains and potatoes in the correct answer highlights the versatility in vodka production, allowing producers to utilize resources that are readily available in their region. This is significant because the distillation process converts starches from these ingredients into alcohol, resulting in the clear spirit known as vodka.

While fruits, nuts, and various dairy products can be fermented and distilled into spirits, they are not the traditional bases for vodka. Therefore, the focus on grains, potatoes, and sugar beets in the correct choice captures the essence of vodka's origins and manufacturing processes accurately.