What effect does Botrytis/noble rot have on grapes?

Botrytis, commonly referred to as noble rot, is a type of fungal infection that can have a profound and positive effect on grapes under certain conditions. The correct choice highlights that Botrytis makes tiny holes in the grape skins. This fungal infection allows moisture to escape from the grapes, leading to a concentration of sugars, acids, and flavors as the water evaporates.

As the grapes shrivel and lose water, the sugars become more concentrated, which is essential for producing sweet wines that are rich in flavor and balance. Additionally, the noble rot can impart unique flavors and aromas to the wine, including notes of honey and dried fruit.

While the other options mention characteristics or effects that are not consistent with the known impacts of noble rot, focusing on the correct answer emphasizes the way Botrytis modifies the grapes to achieve the sought-after results in sweet wine production.