What is the difference between a hot and iced coffee in terms of preparation?

The correct answer highlights that iced coffee is often made by brewing hot coffee and then pouring it over ice. This method is commonly used to create iced coffee because brewing the coffee hot ensures it extracts the full flavor and aroma from the coffee grounds. Once brewed, as the hot coffee is poured over ice, it cools down rapidly, resulting in a refreshing beverage that retains the coffee's rich flavor.

The other options do not effectively capture the primary difference in preparation. For instance, simply saying that iced coffee is brewed and cooled does not accurately reflect the standard method of preparation that maintains flavor. The assertion that hot coffee requires no sugar while iced coffee does is misleading, as both types can be sweetened or not according to personal preference. Finally, the notion that iced coffee is flavored while hot coffee is not is overly generalized; both can be flavored or served black, depending on customer choices and preferences.