What Does the Textbook Suggest About the Nature of "Life-Altering

What does the textbook suggest about the nature of "life-altering" major experiences in life?

A) There is no real evidence that they exist.
B) Life-altering events that produce a major change in one's life are very common.
C) The impact of such events is real, but overblown.
D) Negative life-altering events occur fairly regularly, but positive ones have very little long-term impact.