A) We found that the author’s extensive use of facts and figures (B)were presuasive, though the book as a ©whole was quite (D)dull.
Is it was persuasive?
Yes. Subject is “use” which is singular.
A) We found that the author’s extensive use of facts and figures (B)were presuasive, though the book as a ©whole was quite (D)dull.
Is it was persuasive?
Yes. Subject is “use” which is singular.