Final answer:
The best option to replace sentence 5 and strengthen the topic sentence is G, which directly states who is involved, what action they're taking, and how they're doing it.
Step-by-step explanation:
The best replacement for sentence 5 to strengthen the topic sentence of the second paragraph is option G: Archie Wilson is one example of a college student impacting his community through a peer-mentorship program called Dream Chasers.
This option is effective because it is direct and concise, indicating the subject (Archie Wilson), the action (impacting his community), and the method (through a peer-mentorship program called Dream Chasers). This clear structure provides a strong topic sentence that prepares the reader for the details that follow in the paragraph.
Furthermore, it sets up a narrative about the personal contributions of Archie Wilson, which can be further developed with evidence and examples throughout the paragraph.