A gallon is equivalent to how many cups?

A gallon is equivalent to 16 cups, making this the correct answer. This conversion is based on the understanding that one gallon equals 4 quarts, and each quart is equal to 4 cups. Thus, multiplying the number of quarts in a gallon by the number of cups in a quart gives you the total number of cups in a gallon:

4 quarts/gallon × 4 cups/quart = 16 cups/gallon.

This fundamental measurement is commonly used in cooking and baking, where precise quantities are essential for achieving the desired results in recipes. Understanding these conversions helps in scaling recipes up or down effectively.