Which sentence is subject verb agreement?

Vitamins that are sold in a health-food store are not regulated by the Food and Drug Administration.
Vitamins that are sold in a health-food store is not regulated by the Food and Drug Administration

The first sentence is correct.

The correct sentence with subject-verb agreement is: "Vitamins that are sold in a health-food store are not regulated by the Food and Drug Administration."

The correct sentence with subject-verb agreement is: "Vitamins that are sold in a health-food store are not regulated by the Food and Drug Administration." The subject, "vitamins," is plural, so the verb, "are," also needs to be plural to match. To identify subject-verb agreement, it is important to understand the basic rules of grammar and sentence construction. In this case, the subject (the thing performing the action) is "vitamins," and it should agree with the verb (the action or state of being). In English, singular subjects usually take singular verbs while plural subjects take plural verbs. If you're unsure about subject-verb agreement, you can try rephrasing the sentence to understand the subject more clearly. Punctuation marks, such as commas or conjunctions, can sometimes create confusion regarding subject-verb agreement, so it's important to pay attention to the overall structure and meaning of the sentence.