Put the following arguments into standard form, 

(a) Here are some reasons why you should stop sniffing cocaine. Cocaine is addictive; it is likely to lead to the use of even harder drugs, because the user will always be looking for an even greater high; rightly or wrongly, it is illegal; and it is actually quite bad for your nose.

(b) The eighteenth-century philosopher David Hume was undoubtedly a finer thinker than his even more celebrated successor Immanuel Kant. Hume was by far the more lucid writer. His contributions were more diverse than Kant’s, for he was a first-rate historian as well as a philosopher. Further, Hume’s ethical thought did not suffer from the rigidity of Kant’s. Hume, unlike Kant, would never have said the duty not to lie is so absolute that we should answer truthfully even when a would-be murderer asks where his intended victim is hiding. Thus, there can be little doubt that, of the two, Hume was the superior thinker.

(c) The Cat90 is the best lawn mower you can buy. Since you want the best, you should buy the Cat90.

d) Dozens of people have claimed to have seen Elvis Presley since he was supposed to have died in 1978, so he must still be alive, since that many people wouldn’t be wrong. On account of the fact that Elvis is alive, “Hound Dog” will soon again be a best-selling song.