Question

how did mary shelley get the idea for frankenstein?
she was given the idea by her husband who didnt have time to write the story himself.
she witnessed a man being operated on while visiting friends in london.
she read numerous medical journals and began questioning their validity.
she had a nightmare about a scientist after talking about advancements in technology.

Explanation:

Mary Shelley got the idea for Frankenstein from a nightmare. In 1816, she, her husband Percy Bysshe Shelley, Lord Byron, and others had a competition to write a horror story. One night, after thinking about galvanism (a concept related to electricity and life - like effects) and other scientific discussions of the time, she had a vivid nightmare. In the nightmare, she saw a scientist (later Victor Frankenstein) bringing a creature to life. This nightmare was the starting point for her novel Frankenstein; or, The Modern Prometheus.

Answer:

She had a nightmare about a scientist after talking about advancements in technology.