Correct Answer - Option 2 : 0°
The Greenwich longitude is used to calculate the international time.
Longitude is the angular distance of a place from the Prime Meridian.
- They are the imaginary vertical lines running from the North Pole to the South Pole.
- The lines of Longitudes are also known as Meridians.
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The meridian that runs through Greenwich, England, is internationally accepted as the line of 0 degrees longitude, or prime meridian.
Thus, it is clear that the longitude of Greenwich is extended at 0°.
