What connection does the author draw between jekyll and hyde and human behavior?

In The Strange Case of Dr. Jekyll and Mr. Hyde the duality of human nature is one of the major themes. Stevenson is able to show that humans aren't born inherently bad or good, but somewhere in the middle.

It is a study about the mind of the author and the theories of dualism, and also about human psychology.

answer; (d) i believe the best answer is ; ///people said that man could not fly, but in 1903, orville and wilbur wright made the first sustained powered flight in a heavier- than-air machine;

the answer is a hoped this