Medics, engineers, data workers, decoders, just about everything so long as it wasn't in the trenches with the boys.
Humble leaders use their expertise, experience and knowledge to bring together people to increase revenue, improve production or efficiency and return to the community. Leaders who are modest use their successes for the common good than for self-extension.
Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct responses would be "new information comes to light" and "old theories are discredited". </span>