Final answer:
To establish a therapeutic relationship, qualities of unconditional positive regard, genuineness, and empathy must be communicated to a client.
Step-by-step explanation:
Three qualities that must be communicated to a client to establish a therapeutic relationship are unconditional positive regard, genuineness, and empathy. Unconditional positive regard refers to accepting the client for who they are without judgment. Genuineness involves being authentic and sincere in the interaction, while empathy is the ability to understand and share the client's feelings and experiences.