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Sentence Correction: Subject Verb Agreement - X of Y Subject

In a recent court ruling, a U.S. District Judge insisted that a school board removes the teaching of suggested creationism from its curriculum, claiming that the inclusion of such a topic violates the constitutional separation of church from state.

This answer choice is grammatically incorrect. Insist is one of the nine verbs to which the Subjunctive rule applies (if it is followed by that). This means that the next verb after insisted that should be in base form. However, removes is not in base form.

What helps us identify this question as a Subjunctive question as well as identify the mistake is the following Stop Sign:

propose/recommend/require/request/insist/suggest/mandate/ask/demand that

Whenever you come across this Stop Sign, make sure that the following verb is in its base form.

This answer choice is grammatically incorrect and repeats the original Subjunctive error. Insist is one of the nine verbs to which the Subjunctive rule applies (if it is followed by that). This means that the next verb after insisted that should be in base form. However, has is not in base form.

What helps us identify this question as a Subjunctive question as well as identify the mistake is the following Stop Sign:

propose/recommend/require/request/insist/suggest/mandate/ask/demand that

Whenever you come across this Stop Sign, make sure that the following verb is in its base form.

This answer choice is grammatically incorrect. Insist is one of the nine verbs to which the Subjunctive rule applies (if it is followed by that). This means that the next verb after insisted that should be in base form. However, will remove is not in base form.

What helps us identify this question as a Subjunctive question as well as identify the mistake is the following Stop Sign:

propose/recommend/require/request/insist/suggest/mandate/ask/demand that

Whenever you come across this Stop Sign, make sure that the following verb is in its base form.

Although this answer choice corrects the original Subjunctive error by placing the verb that follows insisted that in the base form (remove), it creates a Subject Verb Agreement error.

The inclusion of such a topic is an X of Y subject. In such cases, the verb should agree with X (the inclusion), which is singular. Therefore, the singular verb violates should be used, not the plural violate

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

The subject is in the form of X of Y

Splendid work!

This answer choice corrects the original Subjunctive error by placing the verb that follows insisted that in the base form (remove).

In a recent court ruling, a U.S. District Judge insisted that a school board removes the teaching of suggested creationism from its curriculum, claiming that the inclusion of such a topic violates
A U.S. District Judge, in a recent court ruling, insisted that a school board has the teaching of suggested creationism removed from its curriculum, claiming that the inclusion of such a topic violates
In a recent court ruling, a U.S. District Judge insisted that a school board remove the teaching of suggested creationism from its curriculum, claiming that the inclusion of such a topic violate
In a recent court ruling, a U.S. District Judge insisted that a school board remove the teaching of suggested creationism from its curriculum, claiming that the inclusion of such a topic violates
A U.S. District Judge insisted, in a recent court ruling, that a school board will remove the teaching of suggested creationism from its curriculum, claiming that the inclusion of such a topic violates