Respuesta :
The correct in the space provided is a personality conflict. A personality conflict occurs when an individual builds up a conflict between two parties because of the reason that both have built up an incompatibility with their personalities and not because of a certain issue that may arise a conflict.
AS they both never got a long or never friendly as they have different personalities, this interpersonal opposition is based on individual dislike and disagreement and this conflict is called as Personality conflict. People having this conflict between them are never on same page and there is no compatibility.