Concept:The purchase of goods on credit by a buyer is entered in the purchases journal.Explanation:Kwamenah bought goods, so the transaction is a purchase, not a sale.Thus, the sales journal and cash book do not record the original credit purchase.The trade discount and cash discount only affect the amount to be paid.The return of defective goods and the later payment are separate entries.The initial purchase of goods from Doe and Sons Limited is recorded in the purchases journal.Answer:C. purchases journal