TASK DEFINITION: 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.
PROBLEM: Well, you already admitted you can't with your "holding their guns in shaking hand, just waiting to shoot whoever comes through the door" statement.

SOLUTION: Invalid

PROBLEM: In every state that retains the death penalty, jurors have the option of sentencing convicted capital murderers to life in prison without the possibility of parole.

SOLUTION: Valid

PROBLEM: Life in jail or in isolation already seems worse from my perspective, especially isolation.

SOLUTION:
Valid