which statement best describes the theory of plate tectonics? plates sometimes move closer to one another…

which statement best describes the theory of plate tectonics? plates sometimes move closer to one another. sections of earth that shift are part of earth’s asthenosphere. sections of earth’s continents are in slow, constant movement. parts of the ocean floor move as they are carried by rift valleys.

which statement best describes the theory of plate tectonics? plates sometimes move closer to one another. sections of earth that shift are part of earth’s asthenosphere. sections of earth’s continents are in slow, constant movement. parts of the ocean floor move as they are carried by rift valleys.

Answer

Brief Explanations:

The theory of plate tectonics states that the Earth's lithosphere is divided into tectonic plates which are in slow, constant motion. The plates include both continental and ocean - floor sections. Option 1 only mentions plates moving closer sometimes, which is not a comprehensive description. Option 2 is incorrect as the shifting sections are part of the lithosphere, not the asthenosphere. Option 4 is wrong as rift valleys are a result of plate movement, not what carries the ocean - floor movement. Option 3 correctly describes the slow, constant movement of sections of Earth's continents which is part of the plate tectonics theory.

Answer:

Sections of Earth’s continents are in slow, constant movement.