**The author and her editor ___ working closely on the manuscript.** Which is correct?
Ais
Bwas
Care
Dhas been
Answer & Solution
Correct answer: C. are
Compound subject 'the author AND her editor' = plural (two people). Plural verb 'are'.
(Note: when subjects are joined by 'or', the verb agrees with the nearer one — different rule.)
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