Answer: The claim that is not defensible is B. George W. Bush was not as talented a poltician as his father, George H. W. Bush.
Explanation: A defensible claim is a claim that can be supported with arguments and evidence. Options A., C. and D. represent defensible claims because they can be justified with arguments. In contrast, option B. represents a mere opinion or personal appreciation: therefore, it cannot be defended with factual information such as statistics. In that way, the correct answer is B. George W. Bush was not as talented a poltician as his father, George H. W. Bush.
