The right answer is "D. By using only facts and evidence"
For the argument to be reliable it is necessary to use consistent and well-founded facts and evidence, since they are stronger and more convincing. The author of the argument has to inform the listener of the reasons that led him to take a certain position, avoiding superficial or unjustified motives, such as: "because nobody I know disagrees," "because I have heard", "because everyone thinks so "," because in the neighborhood everyone says "etc.