What new question occurred to scientists after they discovered that the ocean floor had mountains?

A. How deep is the ocean?

B. How far are the stars from the ocean?

C. How common are these underwater mountains?

D. Why can't the ocean floor be flat and smooth like the bottom of a
bathtub?

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.

Answerheat and pressure