The correct answer is A. Diagram
Explanation:
Diagrams are visual aids useful to represent information including concepts, processes, relation between ideas and sequences in a visual way by selecting only key information and organizing it by using colors, lines, arrows and other visual tools that help the reader understand the way ideas are connected and related to the rest of the content in a text. This means, in most cases diagrams simplify and make easier the process of understanding some information. Additionally, there are multiple types of diagrams to represent almost any type of information which make them suitable to be used in any type of document including reports, analysis and other. Considering the previous ideas, in a report or public document a diagram is often used to help make a complicated process easier to understand as this type of visual aid is useful to represent any type of information in a concise way that makes the reader understand ideas better and easier.
