Answer:
The correct answer is letter "C": Readability and effectiveness.
Step-by-step explanation:
Reports tend to have a formal character. This implies providing objective information that can be useful to whom we are presenting the report -managers in a company, for instance. Thus, the report must convey readability -clear data portrait of easy understanding or with a detailed explanation, and effectiveness -the reason why the report is being made must satisfied with the data gathered.