Answer:
1.)A decent poster design will make your ad more effective than an average one because it has the power of attracting people who typically fall into that target group. ... Advertisers can take this even further by designing posters aimed at specific groups of teens, such as preteens or jocks.
2.)Emphasis is used in art to attract the viewer's attention to a particular area or object. This is typically the focal point or main subject of the artwork. For instance, in a portrait painting, the artist usually wants you to see the person's face first.
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