Answer:
Repetitive words were replaced with synonyms and pronouns.
Step-by-step explanation:
In the original sentence, there is a repetition of the phrase "my father disliked" which makes it a case of repetition. The revised version replaces the repetition with a pronoun "he" and also replaced the verb "disliked" with a synonym "hated".
This correction makes the sentence better and the improvement gave the sentence a much clearer picture.
Thus, the correct answer is the last/ fourth option.