C. Manifest Destiny. Many people believed it was bound to happen, that the US would take the east coast to the west. It ended up to be true, but at the cost of millions of Indian lives.
According to Maslow's hierarchy of needs, people who engage in selfless, altruistic behavior may have reached self-actualization.
According to Maslow's hierarchy of needs, people who already reach this stage have already discovered the true purpose their lives, which influence them to that selfless and altruistic behavior.
A. - this is not true, it's different for different people
B. - this is true!
C. - this might be true for some people, but not for all
D. - absolutely not true!