In this sentence completion exercise, we need to select the most appropriate adverb to describe how an official responded to citizen complaints. The choice of word significantly impacts the meaning and tone of the statement.

Official's Answering Manner

The sentence states, "The official answered ________ that the complaints of the citizen would be looked into." We are looking for an adverb that modifies the verb "answered," indicating the manner in which the official gave their response. It implies a polite and deferential approach, especially when addressing public concerns.

Understanding Adverb Options

Let's examine each option to determine its meaning and suitability in the given context:

• Respectably: This adverb means in a way that is considered proper, good, or socially acceptable, or in a manner that deserves respect. For example, "He behaved respectably at the ceremony." It describes how someone conducts themselves generally, often implying adherence to social norms, but not necessarily the active showing of deference or politeness in a direct interaction.
• Respectfully: This adverb means in a way that shows respect, honor, or deference. For example, "The student respectfully listened to the teacher." When an official addresses citizen complaints, it is expected that they do so with respect for the citizens and their concerns. This word perfectly captures the appropriate tone and attitude of an official showing regard for the public.
• Reputably: This adverb means in a way that has a good reputation; honorably. For example, "The company operates reputably." While an official might be reputable, this adverb describes their general standing or character, not the specific manner in which they deliver an answer or show deference to another person's concerns.
• Respectively: This adverb means in the order previously mentioned. For example, "John and Mary received 1st and 2nd prizes, respectively." This word is used to link items in a list to corresponding items in another list and has no relevance to the manner of answering in this sentence.

Appropriate Word Selection

Considering the definitions, the word that best fits the blank is Respectfully. An official, when responding to citizen complaints and assuring that they will be looked into, is expected to show respect towards the citizens and their grievances. The adverb Respectfully accurately conveys this sense of politeness, deference, and due regard for the citizens and their issues, which is the expected professional conduct.

Therefore, the complete and correct sentence is: "The official answered respectfully that the complaints of the citizen would be looked into."