When a patient expresses frustration during therapy, which counseling principle is the SLP demonstrating through validation and support?

The correct choice highlights the concept of demonstrating a therapeutic relationship by expressing understanding and support for the patient’s feelings. Showing congruence refers to the alignment between a therapist's internal feelings and their outward expressions, fostering an authentic interaction. In this context, when the SLP validates the patient's frustration, they are essentially acknowledging and reflecting the patient’s emotional state, which serves to strengthen the therapeutic alliance.

Validation of feelings is fundamental in therapy, as it communicates to the patient that their experiences are understood and accepted, which can help alleviate feelings of isolation or invalidation. This approach encourages the patient to express themselves more openly, leading to a more effective therapeutic process.

While the other options might involve aspects of providing support, such as offering sympathy or emotional support, they do not capture the essence of congruence as a therapeutic principle. Unconditional positive regard emphasizes accepting and valuing individuals without judgment and is more focused on the therapist's attitude rather than the translation into therapeutic interaction.