I believe that would be C
Increased number of women working in industries
This implied the sudden weakening of the traditional family hence less children which resulted to decreased population in the northern cities whose lifeline was industries and pay job as source of income. more and more women bore less children.
He was assassinated in his car on a parade going in bouston.
These traditions were used by many other colonies and empires.
Hope this helps!
According to the Warren Commission, the group responsible for investigating the assassination, he acted alone.
However, conspiracy theories still abound and a sizeable percent of the population does not believe he acted alone. Most of the Warren report has been released and in 2017 missing information that was withheld for national security reasons is to be released.