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Option D & E are incorrect because of modifier error. As the option choices D & E indicate that scientists were examining rats while eating junk food. Option B & C are incorrect as they are fragments. Option A has no such errors and is the correct answer.
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Scientists examining the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops in utero, not through learned behavior.

(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops-CORRECT

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop
>> sentence construction error no main verb- WRONG

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops
>> sentence construction error no main verb- WRONG
>>rats eating junk food ( better to sy in general format- body that eat junk food rather than eating)

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop
>> examining while eating? - WRONG

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops
>> examining while eating? - WRONG
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Scientists examining the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops in utero, not through learned behavior.

(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops
Scientists is the subject; Examining correctly modifies Scientists; Who correctly modifies Rats; Propensity is the subject for Develops

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop
Propensity - Develop (should be Develops); 'and' is a parallelism marker, but here two are not parallel

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops
eating Junk food ?? Tense ambiguity

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop
While eating Junk food - Looks like rats were enjoying Junk food while being examined

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops
While eating Junk food - Looks like rats were enjoying Junk food while being examined
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Scientists examining the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops in utero, not through learned behavior.

Analysis - A seems to be the correct option.
B - The clause before and has no verb - Incorrect
C - Again, no verb for the clause before and - Incorrect
D - While eating - changes meaning - Incorrect
E - While eating - changes meaning - Incorrect
(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops
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Scientists examining [u]the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops[/u] in utero, not through learned behavior.

(A) the body fat of pregnant rats who ate junk food [s][b]have found that the[/b][/s] propensity for making poor post-weaning food choices develops ( Subject Verb Disagreement, the body fat who ate food, seems murky)

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices [b]to develop[/b] ( Seems the best choice)

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning [b][s]food choices develops[/s][/b](food choices develops seems awkward)

(D) [s][b]pregnant rats' body fat while eating junk food[/b][/s] have found the propensity to make poor post-weaning food choices to develop(we are not talking about pregnant body fat but body fat of pregnant rats(muscles), changing meaning of sentence)

(E) [s][b]pregnant rats' body fat while eating junk food[/b][/s] have found the propensity for making poor post-weaning food choices develops (same as D)

IMO B
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In D and E, "while eating junk food" is incorrect modifier. It doesn't make sense with "rats" and scientists.
In C, "and found" has no parallel structure.
In B, "and found" parallel is "who ate". It doesn't make sense that "rats ate X and found Y". Scientists found something.
So ans is A.

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(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops Correct

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop here who ate...and found are parallel.it seems that rats found something.Wrong

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops Scientists examining the body fat of pregnant rats eating junk food..no verb.Found after and is not parallel with examining.wrong

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop It seems scientists are eating junk food

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops It seems scientists are eating junk food
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Scientists examining the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops in utero, not through learned behavior.

(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops

A- the sentence changes the meaning as it means that the rat found that the propensity for making poor post-weaning food choices develops

B- Correct choice. The use of 'and found' corrects the error in option A. 'to develop' here shows the intended purpose of the utero.

C- use of the -ing form creates tense error. It says as if rats were eating junk food during the time scientists were examining them, which changes the intended meaning.

D- while eating junk food creates the change in the intended meaning of the sentence.the sentence also changes the meaning as it means that the rat found i.e. wrong use of 'found'.

E- found here refers to rats which changes the intended meaning of the sentence.

B is the right answer

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Scientists examining the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops in utero, not through learned behavior.

Here, the subject for verb develops is the propensity(singular), so the verb must be singular (develops), therefore B and D are out.

There is no subject for initial phrase - Scientists examining the body fat of pregnant rats who ate junk food- in C, so C is out.
E implies the wrong meaning - Scientists eating Junk food, so E is wrong. In A meaning is correct, so Answer is A





(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops
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Key things to notice-

1. The correct tense should be "ate junk food" since the scientists examine the body fat of the rats who have already eaten junk food. So choices that use "eating junk food" use the incorrect verb tense.
2. The correct structure should use a verb in the present perfect tense for the subject "Scientists". Options using "and + found" will be incorrect because of lack of a complete verb in the first part of the sentence leading to parallelism error.

Let’s take a look at each option and eliminate any problematic options:

(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops
Correct. No errors.

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop
Incorrect. There is no verb parallel to "found" before and. This leads to parallelism error.

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops
Incorrect. There is no verb parallel to "found" before and. This leads to parallelism error.

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop
Incorrect. Uses incorrect verb tense which distorts the meaning.

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops
Incorrect. Uses incorrect verb tense which distorts the meaning.
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Scientists examining the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops in utero, not through learned behavior.

Sentence Analysis :

Scientists - Subject , examining: present participle acting as a modifier of scientists
Have found : Main Verb with correct Plural S-V agreement

Suspect : Propensity for Vs Propensity to (idiomatic usage) -> Not sure, but I guess both the usage is correct.

Option Analysis:

B, C, -> Main Verb missing ; Ruled out
D,E - > Ruled out for using while, which ambiguously portrays that scientists were examining rats and eating junk food simultaneously, an idea which the original sentence was not trying to state.

Therefore, Correct option is A.
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Scientists examining the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops in utero, not through learned behavior.


(A) [the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops- Correct

Subject-verb pairs are correct - "Scientists"...."have found" and ""the propensity"..."develops"
"for making" - is correct usage
No pronoun error
No Idiom error

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop - incorrect

Parallelism error "Scientists examining.....and found". verb+ing is not parallel with simple past

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops - incorrect

Parallelism error "Scientists examining.....and found". verb+ing is not parallel with simple past

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop - incorrect

"eating junk food" is not modifying the Pregnant rat

E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops - incorrect

"eating junk food" is not modifying the Pregnant rat
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A is correct as is.
B,C: Subject verb pair does not exist for Scientists. "and" should be replaced by "have"
D,E: These choices tell that scientists are examining while eating junk food which is not the meaning of the passage.

Hence, A is the correct choice.
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My choice is (A). It took me 1:35.

(A) No major issues. I do not think "who" is commonly used for animals such as rats though.
(B) "and“ before "and found" is problematic as it tries to link "examining" and "found". They are incompatible.
(C) Same as above.
(D) Who is "eating junk food"? "pregnant rats' body fat" cannot eat junk food, so it must be "Scientists" who are "eating junk food". While comical, the sentence conveys incorrect meaning.
(E) Same as above.
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A is good as is.
Scientists examining the body fat of pregnant rats who ate junk food have found that
the propensity for making poor post-weaning food choices develops in utero, not through learned behavior.

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop....who is modifying rats rather than scientists. Wrong modifier.

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops...... again eating and found are made parallel which is wrong. Also if its examining and found are parallel, it's wrong either.

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop...........while eating modifies scientists who made discover while eating, which is wrong.

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops.......same as D.
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IMO C,


(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops
Realative pronoun error - 'who' is not prefered for animals. Hence eliminate

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop
Realative pronoun error - 'who' is not prefered for animals and also 'to develop' changes the intended meaning of the sentence. Hence eliminate

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor
post-weaning food choices develops
Correct Answer.

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop
Meaning error - Changes the meaning that rats' fat is examined while they are eating junk food. Hence eliminate.

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops
Meaning error - Changes the meaning that rats' fat is examined while they are eating junk food. Hence eliminate.
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(A) the body fat of pregnant rats who ate junk food have found that the propensity for making poor post-weaning food choices develops - Looks decent. Correct verb tense is applied and conveys the meaning without any ambiguity

(B) the body fat of pregnant rats who ate junk food and found the propensity to make poor post-weaning food choices to develop - Scientists examining X and found Y does not represent proper verb tense

(C) the body fat of pregnant rats eating junk food and found that the propensity for making poor post-weaning food choices develops - Same error as B

(D) pregnant rats' body fat while eating junk food have found the propensity to make poor post-weaning food choices to develop - Meaning error as the statement means to imply that the rats ate junk food and this choice implies that the scientists did.

(E) pregnant rats' body fat while eating junk food have found the propensity for making poor post-weaning food choices develops - Same error as D
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