What type of research method attempts to answer the question, “Why are they doing that?”

Marco is considering leaving his wife. she yells at him, throws objects against the wall, hits the dog, and tells marco that he is ugly. which factor is an indication that marco should leave right away and seek ? marco’s wife is unwilling to change. marco may be in physical danger. marco’s wife is ignoring him. marco’s friends tell him that he should leave the relationship.