According to Your Text, What Are the Main Arguments Made

According to your text, what are the main arguments made by those against marital rights for LGBT couples?

A) Marriage is a social institution for men and women almost by definition.
B) Establishing the right would further erode family values as they existed in the golden era of marriage, the 1950s.
C) If same sex couples are allowed to marry they may gain the right to have children, thus increasing the problems experienced by children without access to both parents (in this case, parents of both genders) .
D) All of the above.