Final answer:
Paragraph 5 highlights the fulfilling lives of those with Treacher Collins, contrasting previous sections focusing on the syndrome's challenges and rounding out the text's exploration of the topic.
Step-by-step explanation:
The statement that best describes the relationship between paragraph 5 and the text as a whole is that it highlights the fulfilling lives people with Treacher Collins can live, while previous paragraphs focus mainly on the difficulties of the syndrome. Paragraph 5 likely serves as a conclusion that addresses the 'so what?' question, providing readers with implications of the argument and evidence presented throughout the text. This contrast between the struggles and the positive outcomes provides a comprehensive understanding of the condition and its impacts on individuals' lives.