We would like you to assess the QUALITY of each of the following argument (discussing Death Penalty) 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 death penalty. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of death penalty.
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Question: Many people contend - and prove - that it's more costly to execute a man or to keep a man on deathrow than it would be to keep him in prison for life.

Answer: Valid


Question: But they do have a law forcing post-conviction DNA testing.

Answer: Valid


Question: it has been proven time and again prisons don't rehabilitate, keeping someone in prision for their entire life in prision is less human than the death penalty.

Answer:
Valid