In the given question a phrase of the sentence is printed in bold which needs to be improved. Among the given options choose the option that can improve the given phrase and make it grammatically and contextually meaningful. If no improvement is required and the sentence is correct in its original form, then mark option 5
i.e., 'no  improvement required' as the answer. Despite a patient flow of over 5,000 a day, several wings in the hospital have been remained in a dilapidated state.

'The phrase wings in the hospital' is not incorrect, but 'wings of the hospital' is the more natural and grammatically correct phrasing when referring to parts of the hospital. Additionally, 'have been remained' is incorrect; the correct construction is 'have remained'. Have remained is the appropriate form for the present perfect tense, indicating the state of the wings (dilapidated) has persisted. Correct sentence: "Despite a patient flow of over 5,000 a day, several wings of the hospital have remained in a dilapidated state."