Please help SUPPORTING EVIDENCE #1 - Express an example, fact, or statistic to support your reason.
•online Americans tend to have 664 ties on average, compared with an offline
average of around 506.
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ADDITIONAL DETAIL - Add an addition detail to explain this example, fact, or statistic.

Social networking sites (SNS) provide people with the opportunity to friend members of their overall network of family members, coworkers, and other acquaintances. Much has been made of the use of the word “friend” in this context. Those who are listed as friends on SNS may indeed be friends in the traditional sense, but they can also be old acquaintances (e.g., from high school) or very casual connections between people who have never have met in person. Some worry that as a result of using these services, people may become more isolated and substitute less meaningful relations for real social support. Others believe this might enrich and expand relationships. Here below are our findings on all of this.

your answer is c) experiments with water vapor showed that elements combine in specific proportions.