What is a subject-verb agreement error and how can you fix it?

• A. A misused pronoun.
• B. When a verb does not match its subject (singular/plural); fix by matching number (e.g., 'she walks' vs 'they walk').
• C. An error in pronoun case.
• D. An error in capitalization.

Answer: (B)

Subject-verb agreement means the verb must match the subject in number. When a subject is singular, the verb should be in its singular form (she walks). When the subject is plural, the verb should be in its plural form (they walk). A subject-verb agreement error happens when the verb form doesn’t line up with whether the subject is singular or plural, so the fix is to adjust the verb (or the subject) so they match, as in changing she walks to they walk or vice versa. Other grammar problems—like using the wrong pronoun, mixing up pronoun case, or errors in capitalization—are different issues and not about whether the verb agrees with the subject.