Critical Reasoning

Although migraine headaches are believed to be caused by food allergies, putting patients on diets that
eliminate those foods to which the patients have been demonstrated to have allergic migraine reactions
frequently does not stop headaches. Obviously, some other cause of migraine headaches besides food allergies
much exist.
Which of the following, if true, would most weaken the conclusion above?
(A) Many common foods elicit an allergic response only after several days, making it very difficult to observe
links between specific foods patients eat and headaches they develop.
(B) Food allergies affect many people who never develop the symptom of migraine headaches.
(C) Many patients report that the foods that cause them migraine headaches are among the foods that they
most enjoy eating.
(D) Very few patients have allergic migraine reactions as children live migraine-free adult lives once they have
eliminated from their diets foods to which they have been demonstrated to be allergic.
(E) Very rarely do food allergies cause patients to suffer a symptom more severe than that of migraine headache

A




i think D was an ambiguous contender, still not satidfied how they negated D.


Only because of very few ???If at all few people experienced it then its established that food was indeed the cause hence weakening the arguement.

Analogy - > "One poison dies with a poison or 100--- its proven from a single case that poison kills. "