The sentence that does not have an error in subject and verb agreement is C. There are several of the kits left over in the storeroom.
In A, it should be - was one of the...
In B, it should be - Don't Amber and ...
In D, it should be - is finally...
If either 'in the parade' or 'down Main Street' is underlined, the correct answer is still A, the adjective phrase. Because it refers to the place where such an action happens.
