How is a conversion rate defined? Select one option.

Explanation: The conversion rate is defined as the **number of conversions ÷ number of clicks as a %**. This metric measures the effectiveness of a marketing campaign or advertising strategy by indicating the percentage of users who take a desired action, such as making a purchase, signing up for a newsletter, or filling out a form, after clicking on an ad. By calculating the ratio of conversions to clicks and expressing it as a percentage, advertisers can evaluate the performance of their campaigns in terms of generating meaningful outcomes relative to the number of interactions or engagements initiated by users. A higher conversion rate indicates that a larger proportion of users who interacted with the ad took the desired action, reflecting greater campaign effectiveness and return on investment. Conversely, options such as number of clicks ÷ number of impressions as a %, number of impressions ÷ number of conversions as a %, or number of clicks ÷ number of conversions as a % do not accurately define the conversion rate and are not widely used in marketing analytics. Therefore, understanding the definition of conversion rate as the number of conversions divided by the number of clicks expressed as a percentage is crucial for evaluating the performance and success of advertising campaigns in driving desired user actions.