Regional volcanism is associated with mountain building.
Answer: Option D
<u>Explanation:</u>
Mountain building which is also known as the orogeny is the geological process such as movement of tectonic plates and volcanic activities because of which the mountains are formed by the pressure on the earth's crust when the plates collide.
So the occurring of volcanoes in a particular region along the plate boundaries where there is some movement in the tectonic plates might result in the formation of a mountain.
Since the clock produces 45 useful unites energy units for every 100 unites of energy that it uses, than it turns out that the efficiency of the clock is 45 percent.
