The use of violence would not limit the effectiveness. It would aggravate it, actually, enough to land you in prison for a long time with no bail.
Yes and no. Mutations in experiments can be helpful to learn new things medically. At the same time negatives can come from it like stronger viruses.
The answer would be choice C. Thomas Edison's recorded discussions with Ford on mass production. This source is a credible primary source because it is coming straight from the source.
I believe it's either psychoanalytic theory or trait theory :)