<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An 8-year-old boy is brought to the physician by his parents for blurry vision for the past 2 months. He is at the 97th percentile for height and 25th percentile for weight. Physical examination shows joint hypermobility, a high-arched palate, and abnormally long, slender fingers and toes. Slit lamp examination shows superotemporal lens subluxation bilaterally. This patients findings are most likely caused by a defect in which of the following structural proteins?? A: Laminin, B: Type III collagen, C: Fibrillin, D: Type I collagen, E: Keratin,  <response>: This is a clinical vignette describing a pediatric patient with symptoms and exam findings suggestive of a genetic connective tissue disorder. The key findings are blurry vision due to lens subluxation, tall stature, low weight, joint hypermobility, high-arched palate, and long slender digits. This constellation of findings points towards a disorder of connective tissue integrity. Of the answer choices provided, fibrillin is a structural protein that when defective can lead to the connective tissue disorder Marfan syndrome. Marfan syndrome classically presents with skeletal, ocular, and cardiovascular manifestations including lens subluxation, tall stature, joint laxity, and long slender digits. Therefore, the defect is most likely in fibrillin.C: Fibrillin 