Zalina and Charlotte Are Expecting Their First Child, Conceived with an Anonymous

Zalina and Charlotte are expecting their first child, conceived with an anonymous donor's sperm. Zalina's parents hold conservative views about family structure and worry that a child raised by two mothers won't be able to become a fully-formed adult. They pressure her to either marry a man or become a single mother. Is there any evidence that Zalina can quote to counter their argument?

A) Available research shows that parental sexual orientation is unrelated to the outcome regarding the socialization of children.
B) Some research has shown that children raised from birth by lesbian mothers show fewer behavioural problems than children from mixed-sex families.
C) Research suggests that psychological outcomes for children are better when they are raised by two parents rather than by only one, regardless of the parents' sexual identity.
D) All of the above