Pick your answer from:
[i] " sweetness is made up of added carbohydrates, protein and acidity. Purity: often talked of in terms of sweetness, there are two ways of saying these..
[ii] " sweet wine is high in sugar content, which will cause tingling in the tip of your tongue. Cheap wines and many cabernet sauvignons are often dry..
[iii] " sweetness is pleasant and it enhances flavor and personality. Acidity? This is usually a byproduct of sour grapes..
[iv] " sweetness often develops when the wine is slow to cool, and usually comes out dry, brittle, chapped, or loose. Flavor: zest or tart flavors are often thought to be sweeter compared to other wines..Choose from options above and answer: What most naturally follows?

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Pin down the definitions for sweetness, acidity, and tannic. 
These terms will help you understand the descriptions written on wine labels or in online wine reviews. When talking about wine, these words have the following meanings : 
Sweetness: or a wine's " dryness.
Answer:
[ii]