Final answer:
The action that is a roadblock to therapeutic communication is giving advice. It can lead to patient dependency and reduce their sense of autonomy.
Step-by-step explanation:
Among the actions listed, giving advice is a roadblock to therapeutic communication. In therapeutic settings, the focus is on the patient's feelings, thoughts, and experiences. It is crucial for patients to come to their conclusions with the help of guided discovery rather than being told what to do. Giving advice can often lead to patient dependency, reduce their sense of autonomy, and may discourage them from making their decisions. This is why well-trained therapists typically refrain from giving advice and instead use techniques like active listening, reflection, and open-ended questioning to facilitate the communication process.