The more people that move to western states, which is an already

• The more people that move to western states, which is an already overburdened ecosystem, the more pressure on water resources becomes increasingly great
• The more that people move to western states, which is an already overburdened ecosystem, the greater the pressure is on water resources
• With more people moving to western states, an already overburdened ecosystem, the more pressure on water resources becomes increasingly great
• The more that people move to western states, an already overburdened ecosystem, the greater the pressure on
water resources becomes
• The more people move to western states, which are already an overburdened ecosystem, the greater the pressure on water resources becomes (Correct)

IMO E
Firstly "western states" is plural ... so " which is already" is wrong... so (A) and (B)-Eliminated.
also "increasingly great " in(A ) and (C) is redundant..
.in (c) and (d) -" an already overburdened ecosystem" points to a singular noun but " western ghats is plural"..
" the greater the pressure on water resources becomes"-awkward construction... so Just (E) is left

Here you need to focus on to things:

"The more X, the greater Y" and "states which ARE"

Knowing that:

• The more people that move to western states, which is an already overburdened ecosystem, the more pressure
on water resources becomes increasingly great - Which is , is not correct
• The more that people move to western states, which is an already overburdened ecosystem, the greater the
pressure is on water resources Which is , is not correct
• With more people moving to western states, an already overburdened ecosystem, the more pressure on water
resources becomes increasingly great With , is not correct
• The more that people move to western states, an already overburdened ecosystem, the greater the pressure on
water resources becomes that people , is not correct
• The more people move to western states, which are already an overburdened ecosystem, the greater the pressure
on water resources becomes Correct
_________________

I think something is wrong with option E.

The more people move to western states, which are already an overburdened ecosystem, the greater the pressure
on water resources becomes

western states, which are already an overburdened ecosystem

Don't you think plural states should not be referred as (singular) an overburdened ecosystem.

Already an overburdened ecosystem, western states ( modifier demands singular object I think with plural states such construction is not fine.)

a heavy transport vehicle, bus gives comfortable ride.
a heavy transport vehicle, buses give comfortable ride. ( i think this one is not correct)

I have modified the modifier part as following: I hope it's a better construction.

The more people move to western states, whose ecosystem is already overburdened, the greater the pressure
on water resources becomes

Option E uses correct expression:more the X,more/greater the Y.

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Im still finding E a little confusing, "which are already an overburdened ecosystem" seems to be wrong phrasing.

I too rejected option E based on the same criteria, but then I tried to find out more examples of plural subjects that form an ecosystem.
There are quite a few examples, such as:
- We and our pets are an ecosystem.
- Coral reefs are an ecosystem in danger.
- The Everglades are an ecosystem like no other in the world.

I think that option E is grammatically correct, as it takes more that one element to form an ecosystem. Hence the structure <Plural Subject> are an ecosystem is a correct expression.

"The more people that" seems awkward to me..hence A,B,D out
In C, the more pressure...increasingly great seems redundant.
E best. Looking closely A,B can be cancelled due to western states, which is ....states plural..which IS - singular.

use of the plural word ' states ' makes the correct verb are. So choices A and B incorrect
use of ' with ' in the start of option C makes this choice incorrect
the phrase ' the more that people ' doesn't make much sense so option D also incorrect
the correct phrase is ' the more .... the greater ' which is corrrectly used in option E
Answer - E

Correct Structure is always -

The more........the better/greater/lesser...

None but (E) follows the same...
_________________

Bunuel bb

I’m facing a problem with ‘that’ options D and E.

Is 'that’ always needed on both sides?

In option D, is the issue only idiomatic or does the modifier ‘an overly burdened’ also create any issues? - i feel that just having an overly burdened ecosystem is trying to describe the whole preceding clause which is incorrect?

Official Explanation:

The original sentence uses the verb singular verb "is" with the plural noun "western states". Moreover, the phrase "the more people that move to western states" is not parallel with "the more pressure on water resources becomes increasingly great." These two parts of the idiomatic construction "the more x, the more y" need to be in the same form. We need to find a replacement.

Choice A is the same as the original sentence. Incorrect.

Choice B repeats the subject-verb mistake of the original and does not rectify the parallelism issue. Incorrect.

Choice C makes the parallelism even worse by beginning with a phrase "with more people moving to western states" that is not capable of sustaining the "the more x, the more y" construction. Incorrect.

Choice D avoids the subject-verb problem but does not remedy the parallelism issue, since "the more that people move" is not parallel with "the greater the pressure on water resources becomes". Incorrect.

Choice E remedies the subject-verb problem and deals with the parallelism issue with the pair of phrases "the more people move to western states" and "the greater the pressure on water resources becomes." Correct.
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Simple as youlike...
States.... which is.. incorrect.. Abcd..
States, which are... Bingooo

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