Hi. You didn't provide the excerpt to which the question refers, nor did you provide any answer options. This makes it impossible for this question to be answered. However, I will try to help you as best I can.
Generally speaking, we can state that diction is a literary device that allows the author of a text to choose the appropriate words for the audience he wants to reach. In this way, the author manages to establish a vocabulary and an appropriate language for his audience, which will be able to understand the text in a useful way.
In this case, to answer this question, you should read the passage and pay attention to the type of words used. Are these words formal? Informal? Does the text have figures of speech? Are the words being used with the denotation or connotative meaning? These are questions that can help you analyze the type of words used.
Next, you must identify the audience the author wants to reach with these words and what their objective is with the text.
