Where is the Prime Meridian located?

The Prime Meridian is located at 0 degrees longitude and serves as the starting point for measuring longitude east and west around the globe. It runs through Greenwich, a district in London, England. This geographical reference line is significant because it helps establish a worldwide standard for time zones, with the Greenwich Mean Time (GMT) based on this meridian. The establishment of the Prime Meridian in Greenwich was agreed upon internationally in 1884, making England historically and geographically notable as its location.

The other choices represent countries, but none serve the same purpose in the context of global navigation and timekeeping as England does with the Prime Meridian. For example, while France, the United States, and Australia all have their own longitudinal coordinates, they do not possess a zero-degree reference point in the same way that the Prime Meridian does.