Answer :
Final answer:
The sentence with correct subject-verb agreement is 'A. Somebody always leaves the gate unlocked, so anyone has access to the property,' because both 'somebody' and 'anyone' are singular subjects requiring singular verbs.
Explanation:
The sentence that has correct subject-verb agreement is: A. Somebody always leaves the gate unlocked, so anyone has access to the property. In this sentence, 'somebody' and 'anyone' are indefinite pronouns and are treated as singular subjects, so they require singular verbs. The verbs 'leaves' and 'has' correctly agree with their respective singular subjects. This compliance with subject-verb agreement rules makes option A the correct choice.