Question

What makes a submarine dive?

pumping air into its tanks to increase its density

pumping air into its tanks to decrease its density

adding water to its tanks to increase its density

Answer 1

The answer to your question is C. Adding water to its tanks to increase its density.

Step-by-step explanation:

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Answer 2

It is “adding water to its tanks to increase density.” When the submarine is floating the tanks are filled with air causing its density to be less than the surrounding water.