Using the baby plays into a human instinct to protect young children from harm.
Explanation:
Smoking is an unhealthy habit that does not only affect smokers but those around them as well. The effect smoking has on health and its consequences are usually not enough to get people to give up this habit, as many simply ignore the warnings shown on the cigarette packaging. The given poster uses a different approach - it reminds people that smoking is harmful not only to them but children surrounding them, too. Being protective over children is a part of human nature, and the creator of the poster relies on that instinct.
Testimony shows people's tendency towards the product or idea. Investigating people's thoughts about a
topic builds a foundation of beforehand information which writers use as a supporting evidence. Possible testimony questions are: <em>What are the laws, rules or precedents about the topic? Have there been any testimonials about the topic? Is any statistics used? </em><em>What do creditable sources say about the topic?</em>