Final answer:
The death penalty is questioned as a protection claim because alternative sentences might be equally effective, it raises human rights concerns, can be more costly, and there's disputed evidence on its deterrence effect.
Step-by-step explanation:
The death penalty retentionist claim of protection is considered weak for several reasons. Critics argue that alternative sentences could achieve the same protective goals without the moral and legal complications associated with capital punishment. Moreover, the death penalty is often criticized for potentially violating human rights, as it involves taking a life, which some see as an inalienable right. The financial aspect is also a concern, as legal procedures related to death penalty cases are typically more expensive than those for life imprisonment. Lastly, the effectiveness of the death penalty as a deterrent is highly disputed. While some believe it serves as a deterrent to crime, extensive research and statistics suggest that it does not have a significant impact on reducing crime rates. In some cases, the irreversible nature of the death penalty has resulted in the tragic execution of individuals who were later found to be innocent, due to advancements in forensic technology such as DNA testing.