The media selection consideration that relates to the percent of target audience exposed to the ad at least once during a specified period is Reach.
The reach of an ad refers to just how much of the audience that it was meant to reach have been reached.
This can further be broken down as the percentage of people that were meant to be reached by an ad that were actually reached. A higher reach means that the advertisement was successful.
Find out more on Reach at https://brainly.com/question/15346287
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