human
Question: How is the theory of plate tectonics different from a hypothesis regarding a certain aspect of plate movement?

Choices:
A) The theory addresses an Earth-science topic.
B) The theory may change if new evidence emerges.
C) The theory explains a number of related observations.
D) The theory can be evaluated by a single-variable experiment.
gpt
The correct answer is 2: The theory explains a number of related observations..