A student reads the following passage: 'Proponents of universal basic income argue that automation will displace millions of workers. Critics counter that humans have always adapted to technological change. Yet the speed of current AI development may render historical precedent irrelevant.' What is the primary structural function of the final sentence? A) It introduces a new counterargument against critics. B) It qualifies the scope of the preceding comparison by challenging its applicability. C) It provides empirical evidence to support the proponents' claim. D) It transitions to a discussion of AI policy solutions.

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