Answer:
Option C. The following is the correct choice to complete the sentence: After speaking to his mother, Jason said that he and she had reconciled their differences.
Step-by-step explanation:
All of the options available to fill in the blank of the sentence are different forms of the personal pronouns he and she. When figuring out which form of the pronoun is the correct to use in a sentence, the key is to figure out what role do the pronouns have within the sentence structure. If the pronouns are going to be the subject of the sentence, then they have to be written in the form of he and she. This is the case of the sentence shown on the question, as he and she are the subjects that performed the action of the sentence.