It is often difficult to differentiate between different enantiomers

Question

Which of the following most logically completes the argument?

It is often difficult to differentiate between different enantiomers, molecules with the same chemical formula that are mirror images of one another, with traditional tests. Since enantiomers of certain types of drugs can cause major health problems, some drug manufacturers have created processes that ensure that only the correct form of the drug is produced in order to avoid exposing consumers to harmful enantiomers. However, while such processes do prevent harmful enantiomers from being created during the drug creation process, these processes do not prevent harm from some drug enantiomers since _____.

A. the metabolism of some drugs within the body can create harmful enantiomers regardless of whether the drug itself contains those enantiomers.

B. not all drug enantiomers are harmful and some can even be helpful in fighting certain diseases.

C. many enantiomers only cause minor side effects rather than major health problems when ingested.

D. the creation of harmful enantiomers are not the only side effect that drug manufacturers should seek to reduce.

E. enantiomers are difficult to detect and cannot be pinpointed as the cause of some health problems.

This is a  Data Sufficiency Butler Question

Check the links to other Butler Projects: 
 
   Data Sufficiency Butler 
   Problem Solving Butler  
   Sentence Correction Butler  
   Reading Comprehension Butler  
   Integrated Reasoning Butler

shaurya_gmat · Answer

I think the answer should be A as it explains why the processes adopted by the drug makers to eliminate enantiomers in the initial production of the drug are not sufficient to prevent consumers from harmful effects of enantiomers.

A. · Answer

I am confused between A and E Option.

Why Option E is wrong???

A. the metabolism of some drugs within the body can create harmful enantiomers regardless of whether the drug itself 
contains those enantiomers.

E. enantiomers are difficult to detect and cannot be pinpointed as the cause of some health problems.

shailendra010786 · Answer

We have to find the answer why "these processes do not prevent harm from some drug enantiomers" mean  they are harming somehow . but option E talks about enantiomers are very difficult to detect and  canot not be held responsible for health problems  so this is not addressing the issue why these process not able to stop enantiomers causing some problems.
Hope this helps.

Bunuel · Answer

VERITAS PREP OFFICIAL SOLUTION:

Whenever you are asked for an answer that "most logically completes" an argument, you can determine what type of question you're dealing with by looking immediately before the blank that the answer will fill in. Here that blank is preceded by "since," so you're looking for a reason, and before that it's "these processes do not prevent harm from some drug enantiomers." So you're looking to provide a reason that these processes don't prevent harm - you're looking to strengthen that idea.

In any strengthen/weaken problem it is extremely helpful to notice the gap in logic between the premises and conclusion, and here the "extra" information just before the conclusion gives you great insight into that. Notice the modifier "during the drug creation process" - that gives a good deal of specificity as to where the prevention of harm takes place. It limits the prevention of enantiomers to that narrow scope "during the drug creation process," leaving enantiomers to emerge during any other time period (during transport of the drugs, the drugs' interaction with their containers, when taken in combination with other drugs or foods, etc.). If you notice that, you can scan the answer choices looking for some other timeframe when these enantiomers emerge.

Choice (A) gives you exactly such a situation where this could happen. If the metabolism of the drugs leads to the creation of the harmful enantiomers, then there is no way that changes in the production process can mitigate the effects of harmful enantiomers. Choice (A) exploits that gap in logic and is correct.

Among the other answers, choice (B) can be eliminated because the argument is about exposure to harmful enantiomers, not whether all enantiomers are necessarily bad. Choice (C) can be eliminated because the argument is about limiting consumer exposure to all harmful enantiomers regardless of severity. Choice (D) can be eliminated because the argument is only about enantiomers, not other side effects, and choice (E) can be eliminated because it does not deal with whether it is possible to limit consumer exposure to harmful enantiomers.

It is often difficult to differentiate between different enantiomers

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Critical Reasoning (CR) Questions

It is often difficult to differentiate between different enantiomers

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards