The correct option is D. Letters to editor are written in the format of a business letter. A letter to editor refers to a letter sent to a publication about issues of concern from its readers. Usually, letters are intended for publication. Letters to the editor are most frequently associated with newspapers and newsmagazines but they can also be published in radio and television stations.
Answer is a) the info gathered. This is the answer because you are instructed to do a survey and once when you surveyed them, its obviously asking you for the information. (:
