Any medical test will sometimes fail to detect a condition when its present and indicate that there is one when it is not.

A)
B) when a condition is present and indicate that there is one
C) a condition when it is present and indicate that it is present
D) when a condition is present and indicate its presence
E) the presence of a condition when it is there and indicate its presence


This question is probably the best question I have found that tests your pronoun referrent capability. Consequently, can you explain why answer choice C is correct and the rest are incorrect in the context of PRONOUN referrent. What I want to understand is WHY a particular pronoun in the incorrect answer choice does not have a referrent.

Thank you

I agree this is a good one.

First, let's think about what the sentence is trying to say without pronouns - it's trying to point out a problem and its obverse: detect a condition when the condition is present vs. indicate that the condition is present when the condition is not present.

A) does a fine job with the first bit (detect a condition when it is present) but messes up the second bit "indicate that there is one when it is not" - indicate there is one what? One condition? It sounds like it's saying something like "one condition exists." The point is to indicate the presence of the condition in a particular circumstance, not its mere existence on the planet.

B) repeats that same error

C) does a fine job with the first bit (detect a condition when it is present) and the second bit (indicate it is present when it is not). Fine.

D) muddies the meaning by moving "when" to the front (B does this too). It sounds like the test just can't detect the timing of the condition, as though, sometimes I have cancer and sometimes I don't and the test can't tell when I do or don't. Really, the test is failing to detect the condition itself, not the timing of the condition. See E for the problem at the end of this choice.

E) "indicate its presence when it is not" is incorrect - that translates as "indicate its presence when it is not presence (last word implied)" which doesn't make any sense. We need to say "indicate that it is present when it is not present (last word implied)." Also "the presence of a condition when it is there" is wordy. "a condition when it is present" is much cleaner.

_________________
Stacey Koprince
Instructor
Director of Online Community
ManhattanGMAT

Stacey, thanks for the explanation.



I am confused about the first bit being fine. The first bit is a condition when its present and indicate that there is one when it is not.

Is the possessive pronoun 'its' needed? Shouldn't the pronoun be 'it is'?

Oh - I assumed that was a typo when the person transcribed it onto here and it really said "it is" - let me go look up the actual question.

ETA: yep, it was a transcription error. The original sentence in OG reads "it is" not "its"

_________________
Stacey Koprince
Instructor
Director of Online Community
ManhattanGMAT

Stacey, you da best! Thanks a lot for all your help.

Stacey Rules!