Since stock exchange indexes fluctuate unexpectedly, every

[BTGmoderatorDC]

Since stock exchange indexes fluctuate unexpectedly, every buyer should be aware of the dangers of disappointing investments and its consequences.

A) fluctuate unexpectedly, every buyer should be aware of the dangers of disappointing investments
B) unexpectedly fluctuate, buyers should be aware of the dangers of disappointing investments
C) can fluctuate unexpectedly, every buyer should be aware of the dangers of disappointing investments
D) fluctuate unexpectedly, buyers should be aware of the dangers of a disappointing investment
E) may experience unexpected fluctuations, every buyer should be aware of the dangers of a disappointing investment

OA D

Source: Economist GMAT

[deloitte247]

Option A - Incorrect
Disappointing investments; wrong sentence combination

Option B - Incorrect
Unexpectedly fluctuate; wrong word combination

Option C - Incorrect
This suffers the same fate as option A above. Disappointing investments thus render this option as redundant.

Option D - correct
Correct answer; concise and follows parallelism.

Option E - Incorrect
This option deviates from the true meaning of the sentence. Its meaning was altered by the wrong choice of words. This option is not good fit.