Nothing more was said about it immediately， but a new idea had taken life in her mind.

Nothing more was said about it immediately， but a new idea had taken life in her mind.
A、…but it had taken her whole life to form a new idea.
B、…but her mind began to work busily for new ideas.
C、…but a new idea had changed her outlook on life.
D、…but a new idea had occurred to her.
正确答案：D