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.

Why, then, is it wrong to once again evolve our definition of marriage to include two consenting adults, regardless of race and sexual orientation?
Valid

Well, if we decide to make incest not taboo, we will have a different discussion, one that doesn't have a bearing on gay marriage or inter-racial marriage.
Valid

The family unit has been decimated by the high levels of single mothers, single fathers, abusive parents, neglective parents, high rates of divorce, rising rates of infeditelity, and those are just a few examples.

Valid