- What is the ultimate process that moves the tectonic plates? A. Gravitational Forces
B. Convection
C. Solar Winds
D. Unknown - Still Investigating

I would say B - Convection

Explanation:

it is volcanos and earthquakes that move the tectonic plates... but those act like convection currents...

-Solar Winds come from the Sun and they are reflected off of Earth's magnetic shield so that can't be correct.

-Gravitation does play a role yes but I can not say that it actually causes it... (Gravity holds everything in orbit and also together... and it helps keep things on Earths surface -it is the reason why we can still breath-)

-Unknown - Still Investigating, The reason why the tectonic plates move "was" discovered... or at least it is believed to have been. But I do not doubt that they are still studying it... because they probably are still investigating

-The convection currents move the plates. Where convection currents diverge near the Earth's crust, plates move apart. Where convection currents converge, plates move towards each other.

I have a nice day and I hope it helps!

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-- XxFTSxX

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.