A group of citizens in a country are angry at their king. They feel that he unfairly oppresses them because of their religious beliefs. they also believe that his laws and taxes benefit a few wealthy nobles instead of the majority of the country’s citizens. They would like to replace the king with an elected president who would represent the interests of all citizens. This group follows which of these political philosophies?
Liberalism means "open to new behavior" or willing to discard traditional values. That is exactly what the citizens were doing... they were looking for a new king.