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Bunuel
Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being
(B) and its superiority to chloroform
(C) and its superiority over chloroform had been
(D) its superiority over chloroform
(E) with its superiority to chloroform having been


 


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If we use 'and', the portion after and should be parallel to 'were demonstrated'. We can drop ABC.
In option E, it should also simple past tense.
D is the answer.
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Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being - being is used in present..when the event clearly occurred in past
(B) and its superiority to chloroform - parallelism..its superiority is not parallel with the physiological effects
(C) and its superiority over chloroform had been - wrong verb type.. it should be proven
(D) its superiority over chloroform - correct it refers clearly to diethyl ether
(E) with its superiority to chloroform having been - wrong verb type.. it should be proven
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Quote:
Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being
(B) and its superiority to chloroform
(C) and its superiority over chloroform had been
(D) its superiority over chloroform
(E) with its superiority to chloroform having been

The sentence is supposed to be:
Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and its superiority to chloroform (were) proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.
"were" can be omitted since we already have "were" in the first part i.e. before the "and". Notice that this part "once ..." like a hypothesis => use "were"
"its superiority to chloroform (was) proved by William Morton" is perfectly parallel to "the physiological effects and anesthetic qualities of diethyl ether were demonstrated"
Thus keep B.

A out since a clause cant be parallel to a modifier (with phrase).
C out because:
superiority should go with to
past perfect tense is incorrect. the tense here should be the same as "were demonstrated" - simple past tense

D is ridiculous. no conjunction or anything to connect the clause "the physiological effects and anesthetic qualities of diethyl ether were demonstrated" and the noun phrase "its superiority over chloroform[/u] proved by William Morton". Also "superiority over".
the physiological effects and anesthetic qualities of diethyl ether were demonstrated its superiority over chloroform proved by William Morton

(E) with its superiority to chloroform having been
meaning: "the physiological effects and anesthetic qualities of diethyl ether were demonstrated" and "its superiority to chloroform were proven" play the equal role in the sentence => B is better than E
grammar: placement of the modifier "with its superiority to chloroform having been proved by William Morton" makes it ambiguous
E out

Answer: B
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D. its superiority over chloroform

because the proposition its is required to clearly demonstrate the subject ether
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(A) and with its superiority to chloroform being
usage of being here is not correct in the given context

(B) and its superiority to chloroform
right idiomatic usage. Correct IMO

(C) and its superiority over chloroform had been
usage of had been breaks the parallelism with the previous verb were

(D) its superiority over chloroform
wrong idiomatic usage in the given context

(E) with its superiority to chloroform having been
wrong tense having been used in the given context. Wrong usage of with
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Bunuel
Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being
(B) and its superiority to chloroform
(C) and its superiority over chloroform had been
(D) its superiority over chloroform
(E) with its superiority to chloroform having been


 


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This sentences tells us that medical community adopted diethyl ether as the anesthetic of choice only after two things happened.
1st demonstration of the physiological and anesthetic qualities of diethyl ether.
and
2nd the superiority of diethyl ether to chloroform proved by William Morton.

(A) and with its superiority to chloroform being
The use of "with" and "being" here is unwarranted. Eliminate this option.
(B) and its superiority to chloroform.
This option corrects the mistake of option A and looks better option. It also correctly conveys the intended meaning of the sentence. Keep this option.
(C) and its superiority over chloroform had been
The use of "had been" here is incorrect. Had + past participle is used to indicate the earlier of the two events. In this case we don't know which event occurred first. Therefore eliminate this option.
(D) its superiority over chloroform
"And" is necessary to convey the intended meaning of the sentence. Due to omission of "and" we can eliminate this option.
(E) with its superiority to chloroform having been
"And" is necessary to convey the intended meaning of the sentence. Due to omission of "and" we can eliminate this option.

Therefore the correct answer is option B
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Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being
use of 'being' leads to incorrect parallelism; use of 'with' is also redundant

(B) and its superiority to chloroform
correct paralleism..since 'physiological effects and anesthetic qualities of diethyl ether were demonstrated' and 'its superiority to chloroform proved' are parallel in meaning as well as structure

(C) and its superiority over chloroform had been
incorrect parallelism through the use of 'had been proved' vis-a-vis 'qualities were demonstrated'

(D) its superiority over chloroform
superiority 'to' is the correct idiomatic structure

(E) with its superiority to chloroform having been
use of 'having been' leads to incorrect tense parallelism; use of 'with' is also redundant


(B) is the CORRECT answer
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Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

#1. Between SUPERIORITY TO and SUPERIRORITY OVER, former is correct idiom.


(A) and with its superiority to chloroform being : Incorrect use of being, this is not a process not a simultaneous task.
(B) and its superiority to chloroform: CORRECT, it has proper antecedent DIETHYL ETHER, superiority to is correct idiom and AND is parallelism marker.
(C) and its superiority over chloroform had been: Incorrect because of error #1.
(D) its superiority over chloroform: Incorrect because of error #1.
(E) with its superiority to chloroform having been: Incorrect, having been shows present perfect cont. tense which is not parallel with rest of the sentence.

IMO B.

Bunuel
Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being
(B) and its superiority to chloroform
(C) and its superiority over chloroform had been
(D) its superiority over chloroform
(E) with its superiority to chloroform having been


 


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Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being
(B) and its superiority to chloroform
(C) and its superiority over chloroform had been
(D) its superiority over chloroform
(E) with its superiority to chloroform having been

Explanation:

In the original underlined phrase, major error is the use of incorrect verb tense i.e. 'being proved'.
This sentence describes a series of past events:

1. The physiological effects of diethyl ether were demonstrated
2. William Morton proved ether's superiority
3. The medical community adopted ether

Since the second event happened before the third event, past perfect tense should be used ("had been proved") to indicate that.

From the option we see that only option C uses the correct tense of the verb i.e. 'had been' while the rest don't.

(A) and with its superiority to chloroform being : WRONG
(B) and its superiority to chloroform: Incomplete clause, missing 'was' proved. Also verb tense incorrect. WRONG
(C) and its superiority over chloroform had been: CORRECT
(D) its superiority over chloroform: Same error as in option B. WRONG
(E) with its superiority to chloroform having been: Verb tense incorrect. WRONG

Hence Option C is the correct choice.
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(A) and with its superiority to chloroform being And With is not parallel to noun phrase physiological effects. hence incorrect.
(B) and its superiority to chloroform correct choice
(C) and its superiority over chloroform had been superiority over is wrong idiom. Also, use of past perfect is grossly wrong as well
(D) its superiority over chloroform no conjunction used to separate list item
(E) with its superiority to chloroform having been having been is past continuous is incorrect. Simple past tense verb proved is correct
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The obvious split in the answer choices is: "superiority to" and "superiority over". As the sentence is trying to convey that one thing is better than another one should use "superiority to". This eliminates choices (C) and (D)

(A) and with its superiority to chloroform being
"and with" creates an issue of parallelism.

(B) and its superiority to chloroform
Correct! Makes use of the correct idiom of "superior to" and creates parallelism with "and its" which allows the intended meaning to be conveyed.

(E) with its superiority to chloroform having been
The use of "with" here changes the meaning of the sentence. It conveys that the superiority to chloroform demonstrated the physiological effects and anesthetic qualities of diethyl ether. That makes no sense. The conjunction "and" should be used in place of "while". Additionally the use of "having been" is incorrect.

ANSWER B
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Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being ~ no parallelism with were demonstrated and being proved.
(B) and its superiority to chloroform ~ not parallel to were demonstrated and proved
(C) and its superiority over chloroform had been ~ Correct, with correct tense.
(D) its superiority over chloroform ~ not parallel to were demonstrated and proved
(E) with its superiority to chloroform having been ~ Incorret tense "having been"

IMO Choice C.
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Bunuel
Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being
(B) and its superiority to chloroform
(C) and its superiority over chloroform had been
(D) its superiority over chloroform
(E) with its superiority to chloroform having been


 


This question was provided by Experts Global
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(A) and with its superiority to chloroform being - (1) Tense issue - sentence wrongly conveys that effects were demonstrated in the past but superiority is in the process of being proved, (2) with - adds to the tense issue. Incorrect.

(B) and its superiority to chloroform - Because the noun "ether" is introduced later in the sentence as object, pronoun "its" is required to use it as a subject in the next part of the sentence. Meaning conveyed is correct. Structure ✅️ Meaning ✅️.

(C) and its superiority over chloroform had been - (1) Idiom issue - Correct structure is superior "to" not superior "over" - superior conveys the over/better effect therefore there is redundancy with over. Incorrect.

(D) its superiority over chloroform - Same reasoning as C. Incorrect.

(E) with its superiority to chloroform having been- (1) Tense issue - sentence wrongly conveys that effects were demonstrated in the past but superiority was in the process of being proved. Incorrect.

Therefore, option B is the correct answer.

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Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being---wrong usage of being
(B) and its superiority to chloroform--not parallel
(C) and its superiority over chloroform had been--correct--this event happened before adoption
(D) its superiority over chloroform--wrong sentence correction
(E) with its superiority to chloroform having been--having been is wrong here
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(A) "were demonstrated" shows the action has been completed in the past, so use of "being proved" is wrong, as it suggests action started in the past and is still going on. Also use of "with" here is wrong, we are only listing two actions and not modifying first sentence by second.

(B) This statement correctly mentions tenses. This is correct answer.

(C) Use of "had been" indicates that, "superiority over chloroform" of diethyl ether occured before it's qualities were demonstrated which is logically incorrect. So there is no need of "had been" in the sentence. Hence wrong option.

(D) "demonstrated it's superiority over chloromform proved" is illogical and grammatically wrong statement. Hence wrong option

(E) "demonstrated with it's superiority over chloromform having been proved" is wrong tense-wise and meaning wise. Wrong use of "with" in the sentence. Hence wrong option.

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Bunuel
Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being
(B) and its superiority to chloroform
(C) and its superiority over chloroform had been
(D) its superiority over chloroform
(E) with its superiority to chloroform having been


 


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(A) and with its superiority to chloroform being - Incorrect usage of with, and being
(B) and its superiority to chloroform - Correct
(C) and its superiority over chloroform had been - Incorrect correct idiom is superiority to, superiority over is used to indicate hierarchy
(D) its superiority over chloroform - Incorrect- Incorrect usage of idiom
(E) with its superiority to chloroform having been - Incorrect usage of with, and having been.
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Once the physiological effects and anesthetic qualities of diethyl ether were demonstrated and with its superiority to chloroform being proved by William Morton, the medical community rapidly adopted it as the anesthetic of choice.

(A) and with its superiority to chloroform being - use of with is incorrect
(B) and its superiority to chloroform- all errors are corrected
(C) and its superiority over chloroform had been- were demonstrated and superiority established happened at the same time and hence they both require simple past. Also the latter event mentioned for adoption is not related to the first event of proved
(D) its superiority over chloroform- connector is missing
(E) with its superiority to chloroform having been- use of with does not convey a clear meaning

Ans B

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