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# Sentence Correction: Subject Verb Agreement - Verb Precedes Subject

Because of the complexity of the foreign exchange market, there are many factors affecting currency values, and while risk can be calculated, it is never clear if the profit from a particular trade will exceed expectations.

In the GMAT, the word if should be used in Conditionals only. Since in this question there is no condition, if should be replaced by whether.

Think of whether as a choice between two possibilities dealing with the same subject or as a yes/no question.

Example: I do not know whether this will work. (yes or no)

He was not sure whether he wanted banana or chocolate cake. (a choice between 2 possibilities)

The original sentence incorrectly uses the word if which should only be used in a Conditional sentence. Although this answer choice corrects the error, it makes another: in the GMAT, the addition of the phrase or not at any point after the word whether is considered redundant.

The original sentence incorrectly uses the word if which should only be used in a Conditional sentence. Although this answer choice corrects the error, it makes another: in the GMAT, the addition of the phrase or not at any point after the word whether is considered redundant.

The original sentence incorrectly uses the word if which should only be used in a Conditional sentence. Although this answer choice corrects the error, it makes a Subject Verb Agreement error. The plural subject many factors does not agree with the singular verb is

What helps us identify this question as a Subject Verb Agreement question and identify the mistake is the following Stop Sign

The verb precedes the subject

Excellent choice!

In the GMAT, the word
if should be used in Conditionals only. Since in this question there is no condition, this answer choice correctly replaces if with whether.

Think of whether as a choice between two possibilities dealing with the same subject or as a yes/no question.

Example: I do not know whether this will work. (yes or no)

He was not sure whether he wanted banana or chocolate cake. (a choice between 2 possibilities)

Because of the complexity of the foreign exchange market, there are many factors affecting currency values, and while risk can be calculated, it is never clear if the profit from a particular trade will exceed expectations
Because of the complexity of the foreign exchange market, there are many factors that affect currency values, and while risk can be calculated, it is never clear whether the profit from a particular trade will exceed expectations or not
There are many factors that affect currency values because of the complexity of the foreign exchange market, and while risk can be calculated, it is always unclear whether the profit from a particular trade will exceed expectations
Because of the complexity of the foreign exchange market, there is many factors affecting currency values, and while risk can be calculated, it is never clear whether the profit from a particular trade will exceed expectations
There are many factors affecting currency values because of the complexity of the foreign exchange market, and while risk can be calculated, it is never clear whether the profit from a particular trade will exceed expectations or not