Final answer:
If the patient asks how to clean the tracheostomy stoma and tube, it is the best indicator that the problem identified in the nursing diagnosis of hopelessness related to loss of control of personal care is resolving.
Step-by-step explanation:
The best indicator that the problem identified in the nursing diagnosis of hopelessness related to loss of control of personal care is resolving would be if the patient asks how to clean the tracheostomy stoma and tube (option c). This shows that the patient is actively seeking information and taking an interest in their own care. It indicates a shift from feeling hopeless and dependent to being more hopeful and engaged in their personal care.