Final answer:
The magazine advertisement uses the technique of emotional appeal to evoke a positive emotional response in viewers.
Step-by-step explanation:
The technique used in the magazine advertisement that shows a family having a picnic in a park is Emotional appeal. This technique involves appealing to the emotions of the viewer to create a connection and evoke a response. In this case, the advertisement is using the image of a happy family enjoying a picnic to create positive emotions and make viewers associate those emotions with the product being advertised.
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