What is an explicit example of testing in advertising used to compare performance?

• A. Testing two versions of a direct response ad—one with a celebrity endorsement and one with a savings offer
• B. Testing two landing pages with identical content
• C. Testing two different payment methods on checkout
• D. Testing a single version of an ad for a week

Answer: (A)

Testing two versions of a direct response ad—one with a celebrity endorsement and one with a savings offer—is a clear example of advertising testing used to compare performance. This setup is a classic A/B test: you present two creative variants that differ on a single element and measure which one drives better results, such as higher click-through rates, more conversions, or greater revenue. The goal is to isolate the impact of the creative change (endorsement vs. offer) so you can choose the more effective approach and optimize budget and messaging accordingly.

The other options don’t fit as well. Landing pages with identical content won’t reveal any performance difference since there’s no variation to compare. Testing payment methods on checkout examines the checkout experience rather than how an ad performs, so it’s about the user path after the ad rather than the ad’s impact. Testing one version of an ad for a week lacks a comparative variant, making it impossible to determine which version performs better.