[quote="SUNGMAT710"]Doctor: While a few alternative medicines have dangerous side effects, some, such as many herbs, have been proven safe to consume. Thus, though there is little firm evidence of medicinal effect, advocates of these herbs as remedies for serious illnesses should always be allowed to prescribe them, since their patients will not be harmed, and might be helped, by the use of these products.
Which one of the following, if true,
most seriously weakens the doctor's argument?
we need to find the one that most weaken the argument1.Many practitioners and patients neglect more effective conventional medicines in favor of herbal remedies.
the argument is that since the patients will not be harmed, it might be helped. This one, if true, somewhat weakens the argument, but it does not prove that the conclusion is flaw as it cannot show that herbal will not help2.Many herbal remedies are marketed with claims of proven effectiveness when in fact their effectiveness is unproven.
this is cited in the argument and cannot weaken the argument3.Some patients may have allergic reactions to certain medicines that have been tolerated by other patients.
this does not specific point out that herbs might not help as in the argument's conclusion4.The vast majority of purveyors of alternative medicines are driven as much by the profit motive as by a regard for their patients' health.
out of scope5.Any pain relief or other benefits of many herbs have been proven to derive entirely from patients' belief in the remedy, rather than from its biochemical properties.
correct. It, if true, directly, and specifically, point out that the conclusion that the herbs, though proved to be safe, might be help is not true. So this is the best