Question

when advertising using search engine marketing (SEM), you only pay for

Answer 1

When advertising using search engine marketing (SEM), you only pay for clicks on your ad.

This is known as Pay per click or Cost per click.

Auction and ranking systems are used to determine which websites will show on the top of search engine results page.

Search Engine Marketing depends on paid search.

Answer 2

Option c

Pay per click or Cost per click.