The statement that is true is: Effective responses require practice and effort. The correct answer is option D. A response becomes effective when the person knows how to choose the right words that are appropriate to the given situation. It should be practiced in a way that the responses are flexible enough that can used in different situations. An effective response becomes beneficial in the situation when it is used correctly.
When a graphic, be it bars, lines or points, a table or a diagram is presented the information is exact, even more if we are talking about numbers, we can inferred this data, it needs be calculated and accurate to be present, however in a written paragraph we are able to explain out idea and supported with all the information we consider necessary to proper convey the process we took to conclude the impression presented. The asnwer is D.
This isn't English this is math! Why put it under English?