What significant event in Elie Wiesel's life is documented in his book Night?

The choice reflecting the significance of Elie Wiesel's experiences during the Holocaust is correct. In his memoir Night, Wiesel recounts his harrowing journey as a Jewish teenager during the Holocaust, detailing his experiences in Nazi concentration camps, including Auschwitz and Buchenwald. The work serves not only as a personal narrative but also as a testimony to the atrocities faced by millions during this dark period of history. Wiesel's profound reflections on humanity, suffering, and survival serve to educate readers about the horrors of the Holocaust and the need for remembrance to prevent similar atrocities in the future. This focus on the Holocaust is the central theme of Night, making it a pivotal document of Wiesel's life and legacy.

The other options do not capture the essence of Wiesel's most significant life event as portrayed in Night. His family's emigration to America is not the focus of this memoir, nor does it address his career or education in journalism or literature, which are not the central themes in the context of his experiences during World War II.