What is compared to "electricity" in paragraph 4（）

A.
A．Sunlight B.B．Water C.C．Air D.D．Carbon

The first time I left my mother,1 was five years old. She told me I couldn't go out to play __16__ Ipicked up my toys. Who could put up with such __17__ ？"I'm running away,"I announced. "Oh, dear, I'll __18__ you. But if you really want to __19__，I guess I shouldn't stopyou. " Mother got my red coat from the cupboard and __20__ my white gloves in a pocket. Shewalked me to the __21__ , kissed me good-bye, and __22__ the door behind me. OffIwent. As I __23__ the house next door, my footsteps __24__ . It struck me for the first time that I had no __25__ where I was headed, and after a moment, I turned around. __26__ on our front steps, Ibegan to consider my immediate __27__. But as the afternoon wore on, I didn't __28__ from myplace.Mrs. Ford, our neighbor, took out her rubbish and called, "Hi, honey ! How are you doing?""I'm __29__ ," I said, and my lips started to tremble（颤抖）."You are? Well, I won't __30__ you then," she said, and went back inside.As darkness fell, I decided to be __31__. I knocked on the door, and when Mother opened it,I walked past her. "I'm giving you another __32__," I said, as she enveloped me in a warm hug（拥抱）. I __33__ ran away again.But I __34__ , and that' s different. When I left for college, Mother waved until my trainpulled out of sight. When I got to the college, I found a __35__ she had hidden among my sweatersthat read, "We' re so proud of you ! "（）