Final answer:
The best therapeutic response is to validate the patient's feelings by acknowledging that crying is a normal and acceptable way to express emotions, which is supportive and helps in the healing process.
Step-by-step explanation:
The most therapeutic response when a nurse enters a room and sees a patient crying softly would be option C, which states 'Crying is a normal response; it's okay to express your emotions.' This response acknowledges the patient's feelings without judgment and validates the patient's emotional state as a normal part of the healing process. This reassurance can be comforting to a patient. In contrast, options A, B, and D may not be as supportive or could invalidate the patient's feelings, which is not conducive to a therapeutic nurse-patient relationship. Providing compassionate care and emotional support is crucial in nursing and helps in the patient's overall recovery.