When it comes to technology that does not allow us to know what the ocean floor is like, the answer would be B. Anemometers.
What is an Anemometer?
It is a weather instrument that allows for the measurement of wind speed and its pressure.
It is therefore useful for wind and not to know what happens on the ocean floor. This is the job of sonars and seismic reflections.
In conclusion, option B is correct.
Find out more on anemometers at https://brainly.com/question/24939205.
