We would like you to assess the QUALITY of each of the following argument (discussing Gay Marriage) and determine if the argument is Valid or Invalid. A valid argument is clearly interpretable and either expresses an argument, or a premise or a conclusion that can be used in an argument for the topic of gay marriage. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of gay marriage.

[Q]: There are relatively few gay people in the world, and the number of families headed by same-sex couples is tiny compared with the number of divorced parents and remarried parents and single parents.
[A]: Valid


[Q]: Those who feel that same sex marriage should not be allowed are free to get married and divorced as many times as they like.
[A]: Valid


[Q]: But expanding the eligibility of marriage, or a parallel institution, to same-sex couples who want to take on the civil obligations as well as the benefits of marriage does not logically undermine the institution of marriage.
[A]:
Valid