This doesn’t establish that little investment into new technology means that productivity won’t increase in the near future. The economist is only addressing whether wages will increase in the near future; it doesn’t matter whether they’ve increased in the last several years.

The economist is arguing that wages will not increase. Also, she doesn’t say anything about workers acquiring the skills to use new technology. Even if (B) is true, it still doesn’t tell us whether little investment into new technology means that productivity will not increase.

Even if wages will increase “sooner or later,” this doesn’t prove the conclusion that wages will not increase in the near future. Instead, we need to know whether little investment into new technology means that productivity won’t increase.

We know that if productivity does not increase, then wages will not increase. So, if little investment into new technology means that productivity will not increase, then it also guarantees the conclusion that wages will not increase.

Even if new technology isn’t contributing to increased productivity, this doesn’t prove that productivity won’t increase if businesses only invest a little. In other words, just because the technology isn’t causing increased productivity doesn’t mean that productivity will not increase.