Nutritionist: Vitamins synthesized by chemists are exactly the same as vitamins that occur naturally in foods. Therefore, it is a waste of money to pay extra for brands of vitamin pills that are advertised as made of higher-quality ingredients or more natural ingredients than other brands are.
The nutritionist’s advice is based on which one of the following assumptions?
(A) It is a waste of money for people to supplement their diets with vitamin pills. - WRONG. Altogether kills the argument. Irrelevant.
(B) Brands of vitamin pills made of natural ingredients
always cost more money than brands that contain synthesized vitamins. - WRONG. 'Always' modifies the choice in ways that this loses out its stand if it had some. What if it's not always not the case? If so, then a generic statement can't be made. And if it is indeed true this rather strengthens the conclusion.
(C) All brands of vitamin pills
contain some synthesized vitamins. - WRONG. Irrelevant.
(D) Some producers of vitamin pills are
guilty of false advertising. - WRONG. Irrelevant.
(E) There is no nonvitamin ingredient in vitamin pills whose quality makes one brand worth more money than another brand. - CORRECT. An alternative reason for people to consider expensive brands. If this does not happens then conclusion is in trouble.
Answer E.