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.

正确答案是D