Look at the text below. If there is an error with subject-verb agreement, select the incorrect verb and type it correctly. Otherwise, submit the text without making any changes.

Peanut butter and microwaveable popcorn often contain partially hydrogenated
oil, a main source of trans fat.

Peanut butter and microwaveable popcorn often contain partially hydrogenated

oil, a main source of trans fat.

The text is correct. There is no error with subject-verb agreement.

To identify if there is an error with subject-verb agreement, we need to ensure that the verb agrees with the subject in terms of number and person. In this sentence, the subject is "peanut butter and microwaveable popcorn," which is plural. Therefore, the verb should also be in its plural form.

The verb in the sentence is "contain." This is the correct verb form since it agrees with the subject's plural form. Therefore, the sentence is already correct, and no changes are needed.