OG2 阅读 Q25

Choice C is the best answer. In lines 39-41("We...change"), the author states, "We know that the human brain is highly plastic; neurons and synapses change as circumstances change." In this context, the brain is "plastic" because it is malleable, or able to change.
Choices A, B, and D are incorrect because in this context "plastic" does not mean creative, artificial, or sculptural.