At what stage is acceptance of offer by post valid? When the letter is? By: Sunday|Published on: Jul 22|Categories: Commerce WAEC| 0 comments A. written B. posted C. delivered D. replied E. read Correct Answer: Option C – delivered Users Also Read These:Which of the following is a valid e-mail address?Which of the following stages of the SDLC is post…Which of the following requires acceptance by the…The letter titled 'Letter to my Daughter' has the…A marriage is not valid in Islam without?SEE ALSO Which of the following may be used to restrict imports?