D. Shells
You can ignore all of the words after of until the verb (of marine mollusks)
So it's just shells are taken...
Is the word "that" the italicized word?
California Highway Patrol. The "i" doesn't have a meaning.
The sentence that does not have an error in subject and verb agreement is, "There are several of the kits left over in the storeroom." The verb that is used in the sentence is the linking verb "are", which is in the plural form because the subject, "several of the kits", is also in the plural form. Therefore, the correct answer is option B.