How many feet are in a mile?

A mile is defined as exactly 5,280 feet. This measurement has been standardized and is widely accepted in both the United States customary system and other systems that include miles as a unit of distance.

To provide further context, the mile has its origins in ancient Roman measurements, which defined a mile as 1,000 paces (where a pace was two steps). Over time, this has been adjusted and standardized to the current measurement.

The other choices presented do not reflect the established definition of a mile, as they correspond to different units of distance or are arbitrary numbers that do not hold relevance to the measurement of a mile. Thus, the correct answer not only aligns with historical standards but also is universally recognized.