Because of differences in the humans body's internal

Question

Because of d ifferences in the humans body's internal pressure and the ocean's, it is essential that a diver returning to the surface ascends slowly or they  will suffer a painful condition known as the "bends."

 
a)differences in the human body's internal pressure and the ocean's, it is essential that a diver returning to the surface ascends slowly or they
 
b)the difference between the human body's internal pressure and the ocean's, it is essential that a diver returning to the surface ascend slowly or they
 
c)the difference in the human body's internal pressure and that of the ocean, it is essential that a diver returning to the surface ascends slowly or he
 
d)differences in the human body's internal pressure and that of the ocean, it is essential that a diver returning to the surface ascend slowly or they
 
e)the difference between the internal pressure of the human body and that of the ocean, it is essential that a diver returning to the surface ascend slowly or he

kripalkavi · Answer

A, B, D - OUT for using they (a plural pronoun) with a singular antecedant (diver)

E - OUT for using plural verb (ascend) with singular verb (diver)

 Give me C!

Juaz · Answer

Straight E. 
1. "between" is required. A,C and D are out.
2. better comparison

paam0101 · Answer

What is the OA for this? Between C & E, I will go with C as Ascends is singular

faifai0714 · Answer

I don't want to reveal the OA so early but all I can say is the answer is between C and E

asaf · Answer

I believe the right idiom is â€˜difference between X and Yâ€™..

C does not provide this option. E does.

paam0101 · Answer

Yep, the idiom in choice E looks good but how about the plural verb ascend? "that" introduces a clause and hence diver become the subject (which is singular) so it need singular verb ascends. 
This is the only reason I am going with C (unless the question is posted correctly with no typo)

 Please explain your rationale on the subj-verb relationship in choice E.

Amardeep Sharma · Answer

I will go with C

the difference in the human body's internal pressure and that of the ocean is correct.... all it says is that internal pressure is different for both ocean and human body....

Also ascends correctly fit with the singular he....

regards,

Amardeep

wudy · Answer

Because of d ifferences in the humans body's internal pressure and the ocean's, it is essential that a diver returning to the surface ascends slowly or they  will suffer a painful condition known as the "bends."

a)differences in the human body's internal pressure and the ocean's, it is essential that a diver returning to the surface ascends slowly or  they 
 
b)the difference between the human body's internal pressure and the ocean's, it is essential that a diver returning to the surface ascend slowly or  they 
 
c)the difference in the human body's internal pressure and  that  of the ocean, it is essential that a diver returning to the surface ascends slowly or he -- What does "that" refer to: difference or pressure ?
 
d)differences in the human body's internal pressure and that of the ocean, it is essential that a diver returning to the surface ascend slowly or  they 
 
e)the difference between the internal pressure of the human body and that of the ocean, it is essential that a diver returning to the surface ascend slowly or he--  Correct

GMAThopeful · Answer

In E the comparison between internal pressure of the human body and that of the ocean is correctly worded. Also "ascend" is correct verb form - subjunctive mood.

vmat123 · Answer

C .. correct pronoun 'he' ....also uses ascends instead of ascend..

faifai0714 · Answer

OA is E. 

It is a special structure in subjunctive mood(unreal condition).Pay attention to the following structures:
 It is necessary that.....
It is essential that....
it is important that....
It is strange that....
It is natural that .....
 and so on 
Remember in the above mentioned structures, after "that...", it should be followed by that + subject+should +bare infinitive (original form), but â€œshouldâ€

kyatin · Answer

One more for E. 

I believe ASCEND is right here. I remember to have read this construct in Manhattern SC guide. 

If E turns out to be OA then I will digg in and find out.

kyatin · Answer

Oh there you go faifai0714...subjunctive mood...thats what it is. yeeeeeeeyyy

Because of differences in the humans body's internal

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