题目选项分析

Winemaking during the Prohibition era, a period when the consumption and sale of alcoholic beverages was illegal, suffered for two main reasons: the few winemakers operating were forced to use thick-skinned grapes, which are of a low quality but are better suited for long distance transport, and many winemakers emigrated, taking with them the knowledge of how to create wine.

Winemaking during the Prohibition era, a period when the consumption and sale of alcoholic beverages was illegal, suffered for two main reasons: because the few winemakers in operation were forced to use thick-skinned grapes—quality had been sacrificed but the grapes were better suited for long distance transport—and many winemakers emigrated, thereby taking with them the knowledge of how to create wine.