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100

What is the most common reason teens use cell phones?

What is passing time?

100

Are teen girls or teen boys more likely to use their cell phones to avoid social interaction?

What are teen girls?

200

What does this argument claim the rise in singles is due to?

What is digital solitude?

200

Over what percent of Americans under 35 are single?

What is 50%?

300

In 2015, what percent of households were single-person?

What is 28%?

300

Between 1960 and 2015, households of couples with children decreased from 43% to what percent?

What is 24%?

400

What percent of teens in the US use their phone often to learn new things?

What is 30%?

400

How do falling birth rates compare with the decreasing rates of people in a relationship?

What is a one-to-one ratio?