The answer is that molten material seeps through as plates move apart. While the others: the crust is uplifted to form mountains,a plate that slides below the other melts. and plates move towards each other to form faults. are features of convergent plate boundary.
Let's look into it one by one:
The crust is uplifted to form mountains.- This is false
Although when the plates collide towards each other, the rock materials would accumulate to form mountains indeed, this is not a divergent plate boundary.
A plate that slides below the other melts. - This is false
It is true that the one of the plate which is usually the denser oceanic plate would subducts under the less dense continental plate. Under the heat of magma in the mantle, the plate material would melt. However the plate boundary of this would be convergent plate boundary.
Plates move towards each other to form faults.-This is incorrect.
This is also false. When plates move towards each other, the material accumulated may soon crack under the pressure and form faults. However this is an activity of convergent plate boundary,not divergent plate boundary.
Molten material seeps through as plates move apart.-This is correct.
This is correct as the plates move apart,uprising magma would seep in the cracks to form new crustal materials.
Therefore the answer is molten material seeps through as plates move apart.
Hope it helps!
