Answer:
The factor that an author should keep in mind when writing a persuasive text is:
B. The argument should be clearly stated
Step-by-step explanation:
To understand this answer we need to analyze all of the options.
a) is incorrect because the author should do the opposite to build the strongest thesis he or she can write considering the alternative ideas about the topic.
b) This is correct because the author has to develop the arguments as clear as he or she can develop the thesis properly without any failure.
c) incorrect. If we want to be clear figurative language should be avoided, keep the explanation simple. Because many times it difficult the readers understanding.
d) Is incorrect because arguments are the evidence that builds a theory, thesis, opinion or perspective. So it is in the wrong order.