Apart from a series of fortunate events, what is it that has made Google so successful

A．Michael’s parents got divorced.
B．Karen was adopted by Ray Anderson.
C．Karen’s mother died in a car accident.
D．A truck driver lost his life in a collision.

A．By finding sufficient support for implementation.
B．By taking into account their own ability to change.
C．By constantly keeping in mind their ultimate goals.
D．By making detailed plans and carrying them out.