The Nadas criteria are used to assess:

Correct option is B

Nadas criteria are clinical and physical signs used to detect congenital heart disease in children. Major criteria include a loud systolic murmur and cardiomegaly. These help in early identification and referral for cardiac evaluation in pediatric populations.
Explanation of options: (a) ✘ Epispadias – A urogenital defect not assessed using Nadas criteria. (b) ✔ Congenital heart disease in children – Nadas criteria help detect murmurs and signs suggestive of CHD. (c) ✘ Spina bifida – A neural tube defect diagnosed by clinical and imaging findings, not Nadas criteria. (d) ✘ Gastroschisis – A congenital abdominal wall defect unrelated to cardiac assessment.