A ridge, 64000 km long and 1000 to 4000 km wide, runs down the middle of the North and the South Atlantic Ocean basins, into the Indian Ocean basins, then passes between Australia and Antarctica to enter the south Pacific basin. What is this ridge ?

Options

A. Socotra-Lakshadweep-Chagos ridge
B. Pacific-Antarctica ridge
C. Dolphin-Challenger ridge
D. Mid-oceanic ridge

Answer

D