What are two of the central idea of the article?aMary Shelley was fascinated with science and electricity, and used her scientific studies to help fuel her writing. bMary Shelley was a gifted writer, and "Frankensteirn" is one of the world's best and most enduring horror stories. cMary Shelley lived during the "Year Without a Summer," and this dark season helped her decide to become a writer. dMary Shelley was a writer who married a poet, and the loss of her husband allowed her to explore the concepts of life and death.