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.

I personally believe people are born with a predisposition toward homosexuality which can either be cultivated or repressed, but everyone has the ability to make decisions in their life.
Valid

Homosexual sex is much riskier than heterosexual sex.The fact is that gays DON'T practice safe sex as a group and therefore, have a shortened lifespan as a group.
Valid

They argue that conservative people are using religion, not conservative principle to stand against gay rights.

Valid