Answer:
1. Purchased merchandise inventory for cash. ⇒ ASSET EXCHANGE
2. Sold merchandise inventory on account.
3. Returned merchandise purchased on account. ⇒ ASSET USE
4. Purchased merchandise inventory on account. ⇒ ASSET SOURCE
5. Paid cash on accounts payable within the discount period. ⇒ ASSET USE
6. Paid cash for selling and administrative expenses. ⇒ ASSET USE
7. Sold merchandise inventory for cash.
8. Paid cash for transportation-out. ⇒ ASSET USE
9. Paid cash for transportation-in. ⇒ ASSET EXCHANGE
10. Collected cash from accounts receivable not within the discount period. ⇒ ASSET EXCHANGE