A. People experience different phases in their lifetime, B.
One must appreciate good onstage acting at the theater,
One must accept that there is suffering in human life,
OD. People tend to shy away from things that are unfamiliar,

Allusion and illusion. an allusion is an indirect reference, whereas an illusion is something that is unreal or incorrect. each of the nouns has a related verb form: allude “to refer indirectly to,” and illude (not a very common word), which may mean “to delude or deceive” or “to subject to an illusion.”