Which of the following does the prime meridian not pass through?

The prime meridian is the line of longitude defined to be 0 degrees, which runs from the North Pole to the South Pole. It passes through various geographical locations and significant landmarks.

The correct answer indicates that the prime meridian does not pass through the middle of the Pacific Ocean, which is accurate. The prime meridian primarily runs through parts of Europe and Africa, starting in Greenwich, England, and continues downward through regions of the Arctic and Antarctic Oceans, but notably, it does not cross through the vast expanse of the Pacific Ocean.

In contrast, the other options listed—like the Equator, Greenwich, England, and the Tropic of Cancer—are significant geographical markers. The Equator is the line of latitude at 0 degrees and intersects with the prime meridian. The prime meridian originates in Greenwich, England, which is why it is historically important and well-known. The Tropic of Cancer, although it is a latitude, also crosses sections of land that the prime meridian does traverse. Therefore, identifying the middle of the Pacific Ocean as a point the prime meridian does not pass through is the key to understanding this question correctly.