Final answer:
The suitable term to complete the sentence from the question is 'requests,' as it broadly encompasses all types of assistance a resident might need.
Step-by-step explanation:
The correct answer to the fill-in-the-blank question is 'requests.' When the surveyors are trying to observe the responsiveness to the residents, the term 'requests' is most appropriate because it is a general term that can include calls for help, inquiries, or any other type of assistance a resident might need.
'Calls' could also work, but it is slightly less specific than 'requests.' 'Complaints' would only refer to negative feedback and is not inclusive of all types of communication a resident might initiate. 'Orders' would not be correct because it implies a commercial interaction or command, which is not contextually relevant in this scenario.