C- that answer does not support sea floor spreading
The Pacific Ocean is. Its area is about 63.8 million square miles.
That's about 46 percent of all the water area on Earth, and about
one third of the total area of the whole Earth ... land OR water.
Th correct answer is letter A. Echo sounding is very useful for depth profiles where SONAR is used to determine the depth of water through the transmission of sound pulses. It is calculated by checking the interval between the mission and the pulse that is recorded within the SONAR device.
