What type of relationship is characterized by emotional intimacy and personal interest?

The correct answer is interpersonal relationship because this type of relationship is defined by a deep emotional connection and a significant level of personal interest between individuals. Interpersonal relationships are often characterized by mutual respect, trust, and a willingness to share personal thoughts and feelings, which fosters emotional intimacy.

In contrast, a professional relationship typically focuses on work-related interactions and does not necessarily involve personal investment or emotional closeness. Casual relationships are usually more superficial, lacking the depth and emotional intimacy found in interpersonal relationships. Acquaintance relationships are characterized by familiarity that does not reach the level of intimacy and personal interest; they often involve limited interactions and a more distant connection.