A) This option is incorrect. While early detection and treatment can improve outcomes, complete resolution of congenital heart diseases is not always possible.

B) This option is incorrect. Timely intervention and treatment are essential for managing congenital heart diseases in affected individuals, but they do not prevent the occurrence of these conditions in future pregnancies.

C) Correct answer. Early management of congenital heart diseases is crucial in minimizing complications, improving the quality of life for affected individuals, and enhancing long-term outcomes.

D) This option is incorrect. While early treatment can significantly improve life expectancy and overall health outcomes, it may not guarantee a "normal" life expectancy for all individuals with congenital heart diseases, as outcomes depend on the specific condition and severity.