This paragraph is about negative character traits of expert individuals and how there is avoided by firms.
The author leaves as at a peculiar place: how companies choose employees that get along well. These cannot be experts because it is not in their nature to get along well. So it has to be people who are not experts. A simple inference we draw.
We continue the inference we have drawn above. People who are not experts are not in a position to drive innovation or become experts. But we cannot say their results will be disastrous as the passage mentions how well they get along. So, we adopt a middle path and the choice that represents this balanced approach,
Hence we have option (B) as the answer.