Transcribed Image Text: 29. Which of the following argument is not valid?
A. If I have dark skin, then I am not beautiful. I have dark skin. Therefore, I am not beautiful.
B. If the housing market crashes, then all of my investments will suffer. My investments have
notsuffered. Therefore, the housing market has not crashed.
C. If the price of fuel is cheap, then the price of commodities is also cheap. The price of fuel is
notcheap. Therefore, the price of commodities is also not cheap.
D. If the solution turns blue litmus paper red, then the solution contains acid. The solution does
not contain acid. So, the solution does not turn blue litmus paper red.