Question

to buy goods on credit means to
pay cash for goods
promise to pay for goods later
promise to pay only a sale price
pay only a discount price

Explanation:

Buying on credit means obtaining goods now with an agreement to pay at a future date. Option A is paying cash immediately (not credit). Option C about sale price and Option D about discount price are not related to the concept of credit (which is about the timing of payment, not the price amount). So the correct meaning of buying goods on credit is promising to pay for goods later.

Answer:

B. promise to pay for goods later