What is some evidence that supports the theory of continental drift?

The correct answer is C.

On the first hand, the war is the only man-made event of the ones listed. The others are natural disasters.

A war affects the labor market in several ways. On the first hand, it affects the labor supply, as there will be a shortage of workers offering their services to companies, as many can be involved in warfare activities or dead. It also affects the labor demand, as the war may interfere in the economic activities conducted by firms, decrease the amounts produced and also their necessity of hiring. Or, if this is not the case and the firms continue producing normally, it will find that there is a shortage of workers.