How does the underlined sentence contribute to the overall purpose of the
speech? D. It sets up a vivid illustration of the main points of the speech
Explanation:
Through the lines of the speech it is vividly showed by the author some situations that might bring you down. Within the sentences is expressed the idea of motivation and encouragment. What I got from the text is that you have to pursuit your dreams instead of just being at home watching TV. It also highlights the importance of move on and use the past as a way of learning.
It's important to pay attention to these aspects due to the fact that they may have bias but also have an insight as to what the author may feel. Interpretation is up to an individual and often can be swayed by past experiences and knowledge.