I NEED HALP What happens along a divergent boundary on the seafloor?

Multiple choice question.
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A. Continental mountain ranges form.

B. Oceanic plates are subducted into the mantle.

C. New ocean crust forms.

D. Ocean basins become smaller.

C. New ocean crust forms.

Explanation:

At divergent margins, it is true that new ocean crusts forms at the margins.

Along a divergent margin, two lithospheric plates are moving apart from one another.

Usually, when this occurs between two oceanic plates, the underlying mantle upwells to fill the void. The cooling and solidifying mantlic materials furnishes the formation of a new crust.

This is the oceanic crust.

wher is the rest of the question

the answer is 0.42 is that is an option. this question provides no info