Final answer:
Person-centered therapy, developed by Carl Rogers, focuses on the therapeutic relationship and is characterized by empathy, genuineness, and unconditional positive regard towards the client.
Step-by-step explanation:
The type of therapy that emphasizes the relationship between the client and the counselor and focuses on respect, empathy, genuineness, and a nonjudgmental attitude is D. Person-centered therapy. This therapeutic approach was developed by Carl Rogers, a prominent psychologist, who believed that for therapy to be effective, the therapist must display unconditional positive regard, genuineness, and empathy towards the client. These three features are critical because Rogers posited that they create a supportive environment where clients feel accepted and understood, thereby enabling them to deal with their problems and work through their own issues.