I feel like kindness can be taught because if someone is mean and you set a good example and they want to be just like you they will start be kind. You can also teach kindness in a classroom by making everyone be nice to have a happy classroom and people will be asking for help and asking to borrow something. I also feel like it matter on the age.
In "Symptoms" John Steinbeck analyzes the post war effects of the soldiers from World War II and in “Ambush Tim O’Brien show his remember of a soldier that die in Vietnam war, he alludes to My Khe a Vietnam Beach during his story, the answer is A. World War II and the Vietnam War