Answer: By rebuking deceitful mothers, Helmer demonstrates the belief that women’s primary responsibility was raising children.
Step-by-step explanation:
The author use the character of Helmer to develop the idea of gender inequality by rebuking deceitful mothers, Helmer demonstrates the belief that women’s primary responsibility was raising children.
Option B is incorrect as saying that mothers and fathers share the responsibility of influence over children doesn't demonstrate gender inequality.
Option C is wrong as dismissing Nora’s opinions of Krogstad, doesn't demonstrates how women’s beliefs were oftentimes ignored.
Option D us wrong as stating that he is physically ill in Krogstad’s presence, doesn't make Helmer demonstrates the belief that men are inferior to women.
The correct option is A.