Answer:
The correct answer and the way the author uses the character of Helmer to develop the idea of gender inequality is A. By rebuking deceitful mothers, Helmer demonstrates the belief that women's primary responsibility was raising children.
Step-by-step explanation:
Helmer's reasoning is based in the stereotypes and gender roles according to which it is in the nature of women to raise the children at home. If women do not conform to that role they are depicted as deceitful or disafectionate mothers, resulting in a dysfunctional home. While Helmer also mentions "a bad father", the blame falls mainly on women non-conforming to the role of mother.