Under what conditions is a rock more likely to deform plastically than to break?

At the Earth's surface, rocks usually break quite quickly, but deeper in the crust, where temperatures and pressures are higher, rocks are more likely to deform plastically. Sudden stress, such as a hit with a hammer, is more likely to make a rock break. Stress applied over time often leads to plastic deformation. Hope this helps. ヅ

we would need to see the picture to answer it

i believe the answer would be b. hope it : )