Set 4: Central Ideas (Intermediate)
Explanation
PASSAGE
The following text describes the rock cycle. The rock cycle is a concept in geology that describes the time-consuming transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. Each rock type is altered when it is forced out of its equilibrium conditions. For example, an igneous rock such as basalt may break down and dissolve when exposed to the atmosphere, or melt as it is subducted under a continent. Due to the driving forces of the plate tectonics cycle, rocks do not remain in equilibrium and change as they encounter new environments.
What drives the transitions in the rock cycle according to the text?
Detailed Explanation
Choice B is correct. The text states rocks change 'as they encounter new environments' and explicitly attributes this to 'the driving forces of the plate tectonics cycle.'
Key Evidence:
• "driving forces of the plate tectonics cycle"
• "encounter new environments"
Why others are wrong: A (Not mentioned as a direct cause), C (Not mentioned), D (Not mentioned).