A recent study has found amoxicillin, long a standard treatment for

This is one of report questions that require "that" (found that, indicate that, demonstrate that....) You cannot ignore "that".
Narrow down to D, E.
D is correct;
........that amoxicillin, long a standard treatment for ear infections, is about as effective as newer, more expensive antibiotics and causes
Good comparison and parallelism.

Hope it helps.

Two issues are dealt with in this question :
1.
The researches dint find the drug... they found that amoxicillin .....

So clearly the answer choice is either D or E .
2. and now check for idiom - as effective as

We have the answer choice as D clearly.

I agree w/ the 'found that' idiom, but is it ok to leave out THAT after the 'and'?

The study found that:
1) that Amox is as effective as the more expensive stuff
2) that it causes fewer side effects

A recent study has found amoxicillin, long a standard treatment for ear infections, as being about as effective as newer, more expensive antibiotics and causing fewer side effects.

A. amoxicillin, long a standard treatment for ear infections, as being about as effective as newer, more expensive antibiotics and causing -- that is needed after found, usage of being
B. amoxicillin, long a standard treatment for ear infections, to be about as effective compared to newer, more expensive antibiotics and with -- that is needed after found , as X as is correct idiom
C. amoxicillin, long a standard treatment for ear infections, to be about as effective as newer, more expensive antibiotics and that it causes -- that is needed after found
D. that amoxicillin, long a standard treatment for ear infections, is about as effective as newer , more expensive antibiotics and causes - Correct
E. that amoxicillin, long a standard treatment for ear infections, is about as effective compared to newer, more expensive antibiotics and with - as X as is correct idiom

Answer D

This is a GMAT PREP Question. It's from free exam 1. Please change the TAG.Bunuel

Posted from my mobile device

_____________________
Done. Thank you.

GMATNinja is and that an independent clause? If so shouldnt it be connected by FANBOYS

HI GMATNinja, mikemcgarry, DmitryFarber, MagooshExpert (Carolyn), ccooley, GMATGuruNY, EMPOWERgmatVerbal, EducationAisle

Can we eliminate, because B & C lack verb?

Also in C to be is not parallel to that? Is my understanding correct?

I'm not sure that I understand your question, but I'll give it a shot...

You can certainly have a parallel list of "that" clauses, i.e., "A study has found 1) that amoxicillin is effective and 2) that penicillin is ineffective."

Both 1) and 2) are noun clauses which cannot stand by themselves ("that penicillin is ineffective" would not be a complete thought).

B & C both have a main verb: "A recent study has found..." However, as pointed out in this post, we need a "that" after "has found". The study did not FIND amoxicillin (hiding under a rock?). Rather, the study found out something ABOUT amoxicillin. What did the study find out? "THAT amoxicillin is about as effective...{etc.}"

We also want "as effective as", not "as effective compared to", so there's another issue with (B).

Yes, you are right about the parallelism issue in (C)!

A recent study has found amoxicillin, long a standard treatment for ear infections, as being about as effective as newer, more expensive antibiotics and causing fewer side effects.

(A) amoxicillin, long a standard treatment for ear infections, as being about as effective as newer, more expensive antibiotics and causing Reported speech ("...study has found...") requires "that" to report. Current structure seems to imply that amoxicillin itself has been found by the study. Eliminate.

(B) amoxicillin, long a standard treatment for ear infections, to be about as effective compared to newer, more expensive antibiotics and with Same error as in (A). Also, "as effective" needs to be followed by "as" for correct comparison. Eliminate.

(C) amoxicillin, long a standard treatment for ear infections, to be about as effective as newer, more expensive antibiotics and that it causes Same error as in (A). Eliminate.

(D) that amoxicillin, long a standard treatment for ear infections, is about as effective as newer, more expensive antibiotics and causes Correct answer. Correct form is used for reported speech and correct structure "as effective as" is used to compare. No new errors are introduced.

(E) that amoxicillin, long a standard treatment for ear infections, is about as effective compared to newer, more expensive antibiotics and with "as effective" needs to be followed by "as" for correct comparison. Eliminate.

Hope this helps.

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