Count Noun, SV agreement, Plural....

[karthikpandian19]

27. A report by the American Academy for the Advancement of Science has concluded that much of the currently uncontrolled dioxins to which North Americans are exposed comes from the incineration of wastes.
(A) much of the currently uncontrolled dioxins to which North Americans are exposed comes
(B) much of the currently uncontrolled dioxins that North Americans are exposed to come
(C) much of the dioxins that are currently uncontrolled and that North Americans are exposed to comes
(D) many of the dioxins that are currently uncontrolled and North Americans are exposed to come
(E) many of the currently uncontrolled dioxins to which North Americans are exposed come

[bubbliiiiiiii]

27. A report by the American Academy for the Advancement of Science has concluded that much of the currently uncontrolled dioxins to which North Americans are exposed comes from the incineration of wastes.
(A) much of the currently uncontrolled dioxins to which North Americans are exposed comes
(B) much of the currently uncontrolled dioxins that North Americans are exposed to come
(C) much of the dioxins that are currently uncontrolled and that North Americans are exposed to comes
(D) many of the dioxins that are currently uncontrolled and North Americans are exposed to come
(E) many of the currently uncontrolled dioxins to which North Americans are exposed come

Although confused between usage of much and many, based on other factors, IMO E

[GmatKiss]

27. A report by the American Academy for the Advancement of Science has concluded that much of the currently uncontrolled dioxins to which North Americans are exposed comes from the incineration of wastes.
(A) much of the currently uncontrolled dioxins to which North Americans are exposed comes
(B) much of the currently uncontrolled dioxins that North Americans are exposed to come missing ,
(C) much of the dioxins that are currently uncontrolled and that North Americans are exposed to comes
(D) many of the dioxins that are currently uncontrolled and North Americans are exposed to come missing (,) and wordy
(E) many of the currently uncontrolled dioxins to which North Americans are exposed come

[karthikpandian19]

OA is E

But someone can explain the concept of the COUNT NOUNS

[Bill@VeritasPrep]

A noun being considered countable or uncountable depends on being able to count individual items of that noun.

In this case, we can count dioxins. We could say that there are seven dioxins to which North Americans are exposed.

On the other hand, water is uncountable. I couldn't say that I drank three waters yesterday. Three liters of water, or three glasses of water, sure, but not three waters.

Unique modifiers for countable/uncountable (using trees as a countable noun and water as an uncountable noun):

Many trees, much water
Few trees, little water
Fewer trees, less water
Several trees, some water

[confuse mind]

27. A report by the American Academy for the Advancement of Science has concluded that much of the currently uncontrolled dioxins to which North Americans are exposed comes from the incineration of wastes.
(A) much of the currently uncontrolled dioxins to which North Americans are exposed comes
(B) much of the currently uncontrolled dioxins that North Americans are exposed to come
(C) much of the dioxins that are currently uncontrolled and that North Americans are exposed to comes
(D) many of the dioxins that are currently uncontrolled and North Americans are exposed to come
(E) many of the currently uncontrolled dioxins to which North Americans are exposed come

Although confused between usage of much and many, based on other factors, IMO E

I did not understand your reasoning for ruling gout B, dioxins that North Americans are exposed to look correct to me.
There is an inherent problem because of much - I agree but I didn't understand how the above highlighted part is incorrect.

[ihatemaths]

why do you need a TO ? when exposed sounds fine.

[karthikpandian19]

the right answer is E, which doesnt uses the TO and uses EXPOSED

why do you need a TO ? when exposed sounds fine.

[Bill@VeritasPrep]

E uses "to" as well, but in front of dioxins instead of behind it as B does. As a general rule, we should not end a sentence or clause with a preposition. This is why (aside from the many/much issue) B can be ruled out.