Which plot element is best shown in this excerpt?

Do you think that the american culture has defined what “normal” is and so our perception of chris mccandless is skewed based on that?

How does the yellow fever altered history

Which of the following factors most consistently contributes to the speaker’s believability? a the age and experience of the speaker b the physical environment in which the speech is delivered c the sincerity, knowledge, and trustworthiness of the speaker d the position of the thesis statement in the speech