Concept:A purchase day book is a special journal used to record credit purchases of goods.
Explanation:The purchase day book is the book of original entry for all goods bought on credit from suppliers.
Cash purchases are not recorded here because they involve immediate payment.
Instead, cash purchases are recorded in the cash book.
Returns of goods to suppliers are entered in the purchases returns book.
Only credit purchases of goods are first entered in the purchase day book, and then posted to the purchases account and individual supplier accounts.
Thus, the purchase day book specifically records credit purchases.
Answer:D. credit purchase.