Which is the correct indirect speech for [She says, "She sang a song."] Is it [She says that she SANG a song]? Or is it [She says that she SUNG a song.]

Answer 1

The correct answer here would be A. "Sung" is the past participle of "sing," which would be used in sentences like, "The woman had sung a ballad." "Sang" is the past tense of "sing," which is why it fits better into the sentence.