An external conflict is a conflict that is not internal, which means, it is not a conflict in which one person can't decide between some options, but rather when there is a conflict between some individuals.
The correct answer is C. A retired lawyer comes back to court to fight a new young lawyer in a case that will save the home of a needy family.
There is no bold portion in the sentence you gave I would add some kind of punctuation between you and said. I will prepare an excellent meal for you. Said the cook.