How did Imperialism, which was created from these rivalries, help set the stage for World War I?

Imperialism in their sense of rivalry and mistrust of one another deepened.

D. It has led many societies to become more secular and less religious

Explanation:

With the modernization during the 20th and 21st centuries, thus with the people being able to get more information and knowledge, the religion has suffered badly in lot of regions. Gradually the people have started to move away from the religion, and more and more have become atheists and agnostics, with the religious authorities also losing their power. This has slowly shifted the societies to become more secular and less religions, and the prime examples for this are European countries, as well as big portion of the developed countries around the world. The religion has remained strong only in the developing and less developed countries which are still not modernized properly.