At what stage is acceptance of offer by post valid? When the letter is? by Sunday | Jul 22 | 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 are elements of a valid contract?The letter titled 'Letter to my Daughter' has the…Which of the following requires acceptance by the…The most acceptance and convenient means of payment…A requirement for an offer to be valid is that it should be?