29. Select the sentence with proper subject-verb agreement.

Answer: D

Explanation:

Sherri and her cousin were at the County fair this year.

This sentence demonstrates proper subject-verb agreement as it correctly pairs the plural subject "Sherri and her cousin" with the plural verb "were."

A) A pitchfork and a halter were left on the concrete floor.

This option incorrectly uses the plural verb "were" with a compound subject that is singular in meaning. Although "pitchfork" and "halter" are two items, they are considered as one unit in this context, which should use the singular verb "was."

B) There is a pig, sheep, and horse in the red trailer.

In this sentence, the subject is plural ("pig, sheep, and horse"), but it incorrectly uses the singular verb "is." The correct verb form should be "are" to match the plural subject.

C) Here are the cages for the 2 rabbits and 2 chickens.

While this sentence is grammatically correct, it does not follow the subject-verb agreement rule as clearly as option D. The subject "cages" is plural, and "are" is correctly used, but it lacks the specificity of the subject-verb agreement focus that option D presents.

D) Sherri and her cousin were at the County fair this year.

This option correctly matches the plural subject "Sherri and her cousin" with the plural verb "were," fulfilling the requirement for proper subject-verb agreement.

Conclusion

The sentence "Sherri and her cousin were at the County fair this year." is definitively correct due to its clear subject-verb agreement. All other options either misalign the subject and verb in terms of number or lack the same clarity in demonstrating the grammatical rule being tested. Thus, option D stands out as the only correct choice.