The correction that should be made is:Replace the homophone piece with the correct word peace in sentence 4.
The corrected sentence would be: "Clearly, holding on to the anger that drives revenge makes a person miserable, while letting that anger go brings peace."
The original sentence in question is: "Clearly, holding on to the anger that drives revenge makes a person miserable, while letting that anger go brings piece."
The error in this sentence is the use of the word "piece," which is a homophone for the intended word, "peace." A homophone is a word that sounds the same as another word but has a different meaning and is spelled differently.