An annually conducted, nationwide survey shows a continuing

I pick E.


(A) Changes in the level of drug use by high school seniors are seldom matched by changes in the level of drug use by other people below the age of 20.
<The statement says that the survey sometimes matches the level of drug use by other people below 20.>

(B) In the past, high school seniors were consistently the population group most likely to use illegal drugs and most likely to use them heavily.
<out of scope, talks about the past and how seniors were consistently most likely to use drugs and shows no reason why the number of seniors using drugs is declining>


(C) The percentage of high school seniors who use illegal drugs is consistently very similar to the percentage of all people below the age of 20 who use illegal drugs.
<shows no reason why the number of seniors using drugs is declining >

(D) The decline revealed by the surveys is the result of drug education programs specifically targeted at those below the age of 20.
<out of scope, the passage talks nothing about drug education, In addition this statement talks bout people under 20 NOT high school seniors.>

(E) The number of those surveyed who admit to having sold illegal drugs has declined even faster than has the number who have used drugs.
Correct <Those who were surveyed and admitted to selling drugs said they were selling less drugs than the number who use them. So if the supply of drugs is declining faster the seniors who use them, the number of seniors who use drugs will decline cause they cannot obtain the drugs.>

I would go for C.
The conclusion will hold true if we can prove that people below the age of 20 are the high-school seniors.

It should be C

Only 'C' can be used to conclude about people below 20 years of age from the given survey results.

I'll go with C

Agree with C. Shift of the scope question.

I think its C ...

it is the only one which creates a link between highschool seniors and people under the age of 20.

I know C is what most of us are picking, wonder how to elliminated D?

i choose D. Whats the OA

C.

It is not D because

D refers to all those below the age of 20... but how about high school seniors?

Please do not forget to post the OA. I see several CR's who do not have an OA. I understand if you want to wait a little bit longer.
Thanks- appreciate it. :-D