8. (1) Earth's crust is made up of relatively rigid plates that ride atop Earth's hot, semiliquid mantle. (2) The plates are called tectonic because they're in constant
motion. (3) They can move because Earth's mantle is a very hot and semiliquid fluid called magma. (4) Volcanoes are a result of magma rising up or erupting
against each other, causing friction along adjacent
through a plate, particularly where plate boundaries are moving against each other. (5) Also, when plates slide against each
plate boundaries, earthquakes frequently occur. 6) Therefore, we often find volcanoes and earthquakes along plate boundaries. (7) Plates may also collide. (8)
When that happens, mountain ranges are formed. (9) For example, the collision of the plate carrying the Indian subcontinent created the Himalayan Mountains when
it collided with the Asian plate.

Which statement about this paragraph is accurate?
A. The author uses comparison and contrast to organize ideas.
B. The topic sentence is the found in the last line.
C. There is an implied topic the moving plates in Earth's crust have many effects.
D. There are no supporting details for the main dea.