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Sentence Correction: Subject Verb Agreement - X of Y Subject

There is a difference in the way the term turnover and the term revenue is used in business across the Atlantic; in the United States, turnover refers to how rapidly the inventory acquisition and transaction occurs whereas in Europe turnover refers to a company's income, known in the States as revenue.

Incorrect.

[[snippet]]

What helps us identify this question as a Subject Verb Agreement question and helps us detect these mistakes is the following Stop Sign:

A plural subject made up of singular nouns connected by and

Incorrect.

[[snippet]]

Although this answer choice corrects one of the original Subject Verb Agreement mistakes, it repeats the other one. The plural subject the inventory acquisition and transaction does not agree with the singular verb occurs.

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

A plural subject made up of singular nouns connected by and

Although it corrects both original Subject Verb Agreement mistakes, this answer choice changes the meaning of the sentence by replacing the opposition word whereas to the reason word since, creating a cause and effect relationship that was not present in the original sentence.

Excellent!

[[snippet]]

This answer choice corrects the two original mistakes by turning the clause the way the term revenue and the term turnover is used into a noun phrase, with no subject or verb: the usage of A and B. If there is no verb there can be no Subject-Verb Agreement mistake (!)

The remainder of the sentence is changed by adding the rapidness as the singular subject of the second clause. The rapidness of A and B is an X of Y subject, and is thus singular according to the X.

What helps us identify this question as a Subject Verb Agreement question and helps us detect these mistakes are the following Stop Signs:

A plural subject made up of singular nouns connected by and

An X of Y subject

Note: If you have not learned the topic of clauses yet, you will reach it later on in the course.

Although it corrects both original Subject Verb Agreement mistakes, this answer choice is grammatically incorrect. The singular subject rate does not agree with the plural verb are.

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

A long complex subject / long distance between subject and verb

way the term turnover and the term revenue is used in business across the Atlantic; in the United States, turnover refers to how rapidly the inventory acquisition and transaction occurs whereas
use of the term turnover and the term revenue in business across the Atlantic; in the United States, turnover refers to how rapidly the inventory acquisition and transaction occurs whereas
way the term turnover and the term revenue are used in business across the Atlantic; in the United States, turnover refers to how rapidly the inventory acquisition and transaction occur since
usage of the term turnover and the term revenue in business across the Atlantic; the rapidness of inventory acquisition and transaction is called turnover in the United States whereas
way the term turnover and the term revenue are used in business across the Atlantic; in the United States, the rate at which the inventory acquisition and transaction occur are called turnover whereas