Prep SC--insufficient consumption of nutrients

[yinliqiu]

Hi Ron, I have some questions about the choice E

(E) up to 40 percent of elderly people who live independently in affluent countries consume insufficient amounts of one or more essential nutrients or have

As I know, "amounts of" can only modify uncountable nouns.
So, why here it can modify "one or more essential nutrients"

Thanks in advance.

[jlucero]

Hi Ron, I have some questions about the choice E

(E) up to 40 percent of elderly people who live independently in affluent countries consume insufficient amounts of one or more essential nutrients or have

As I know, "amounts of" can only modify uncountable nouns.
So, why here it can modify "one or more essential nutrients"

Thanks in advance.

Because amount is used to describe the quantity of something (100mg of Vitamin C), while number would describe how many vitamins you require (13 different vitamins). This sentence does not concern itself with how many nutrients people don't have enough of, but how much of each essential nutrient that they lack.

[yinliqiu]

Hi Ron, I have some questions about the choice E

(E) up to 40 percent of elderly people who live independently in affluent countries consume insufficient amounts of one or more essential nutrients or have

As I know, "amounts of" can only modify uncountable nouns.
So, why here it can modify "one or more essential nutrients"

Thanks in advance.

Because amount is used to describe the quantity of something (100mg of Vitamin C), while number would describe how many vitamins you require (13 different vitamins). This sentence does not concern itself with how many nutrients people don't have enough of, but how much of each essential nutrient that they lack.

I see. thanks very much.

[RonPurewal]

good stuff.

[yangxu258895255]

Hi, can anyone explain D?
I am confused about anwer D , "who" can refer to "people"？

thanks！

[yangxu258895255]

After decreasing steadily in the mid-1990's, the percentage of students in the United States finishing high school or having earned equivalency diplomas increased in the last three years of the decade, up to 86.5 percent in 2000 from 85.9 percent in 1999 and 84.8 percent in 1998.

(A) finishing high school or having earned equivalency diplomas increased in the last three years of the decade, up to 86.5 percent in 2000 from 85.9 percent in 1999 and
(B) finishing high school or earning equivalency diplomas, increasing in the last three years of the decade, rising to 86.5 percent in 2000 from 85.9 percent in 1999 and from
(C) having finished high school or earning an equivalency diploma increased in the last three years of the decade, and rose to 86.5 percent in 2000 from 85.9 percent in 1999 and from
(D) who either finished high school or they earned an equivalency diploma, increasing in the last three years of the decade, rose to 86.5 percent in 2000 from 85.9 percent in 1999 and
(E) who finished high school or earned equivalency diplomas increased in the last three years of the decade, to 86.5 percent in 2000 from 85.9 percent in 1999 and
OA：E

in this question,"who" refers to the "students",

so, why the answer "D"˜ is wrong?"”"up to 40 percent of elderly people living independently in affluent countries who consume insufficient amounts of one or more essential nutrients or who have"

[tim]

that's actually not the problem with D. the problem is that it isn't a sentence. D boils down to this:

"Studies have shown that up to 40 percent of elderly people ... who [do stuff]."

we need a verb to finish this out and make it a complete sentence..