[S1] Katz has done extensive research on how technological advances have affected jobs over the last few centuries—describing, for example, how highly skilled artisans in the mid-19th century were displaced by lower-skilled workers in factories. [S2] While it can take decades for workers to acquire the expertise needed for new types of employment, he says, “we never have run out of jobs. There is no long-term trend of eliminating work for people. Over the long term, employment rates are fairly stable. People have always been able to create new jobs. [S3] People come up with new things to do.” Though Katz expects the historical pattern to hold, it is “genuinely a question,” he says. “ [S4] If technology disrupts enough, who knows what will happen?” Which choice provides the best evidence for the answer to the previous question?