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.
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Question: It can't be proven that opposite-sex marriage is harmless, it can't be proven that alcohol use is harmless, it can't be proven that airbags or seatbelts are harmless, even.

Answer: Valid


Question: Gays and lesbians utilized this form of expression in the very same manor as do straight couples.

Answer: Valid


Question: I think we've been down this road, just because something is "long standing" does not make it fair or equitable.

Answer:
Valid