The original two words are opposites (emancipate: make free/imprison: make not free , so we have to look for other opposites. Those are: endorse (support) and oppose.
At 1950s it was different then today today we have many things at 1950s they didn't have many things they didn't have cars things were different then today today it's change it's not 1950s
I believe the answer is c.