The common procedure for determining whether a food additive should be

The common procedure for determining whether a food additive should be banned from use is to compare its health-related benefits with its potential risks. Yellow Dye No. 5, an additive used to color lemon soda, might cause allergic reactions in a few consumers. For most consumers of lemon soda, however, the coloring enhances their enjoyment of the beverage. This particular additive should not be banned, therefore, because its benefits greatly outweigh its risks.
A flaw in the argument is that the author

Health related benefits decide whether a food be banned from use. Here even though Yellow Dye No. 5 additive that cause allergic reactions in a few consumers, author claims that it should not be banned because its benefits greatly outweigh its risks. Here it's to be noted that only positive about the additive is that it enhances the enjoyment of the beverage for most of the consumers.

(A) implies that the dye entail no health-related risks - WRONG. Opposite

(B) treats enjoyment of a beverage as a health-related benefit - CORRECT.

(C) ignores the possibility that some food additives are harmful to most people - WRONG.

(D) bases the argument on an unproven claim regarding a danger in using Yellow Dye No. 5 - WRONG. Scope not covered.

(E) presumes that most consumers heed the warning labels on beverage containers - WRONG. Irrelevant.

IMO Answer B.