Q.Choose the correct option: In a pay-per-click (PPC) advertisement, the business pays —

The name 'pay-per-click' itself tells you exactly when the charge is made.

Payment is tied to clicks, not to how often the advertisement is displayed or to delivery.

The term pay-per-click is self-explanatory, but each option tests a different misunderstanding.

• (a) a fixed monthly fee — this describes a subscription model, not PPC.
• (b) each time the advertisement is shown — paying per display is a different model (cost-per-impression); PPC does not charge merely for showing.
• (c) each time a user clicks the advertisement — correct. In PPC the advertiser is charged only when someone actually clicks, so money is spent only on interested visitors.
• (d) only when a product is delivered — payment on delivery/sale describes affiliate or performance models, not PPC.

Do not confuse paying per click (PPC) with paying per impression (per display). PPC charges only when the advertisement is clicked, so the business pays only for actual visits.