One cause (a)   low test scores may be TV viewing

There is a lot of concern (a)   childhood obesity

Advertising may have an effect (a)   children's diets

Television has an impact (a)   young children

There is a link (a)   TV viewing and language development

One problem (a)   television is the number of commercials

There's a relationship (a)   reading and test scores

What are the reasons (a)   obesity?

The research (a)   the viewing is very clear

There has been a rise (a)   bullying in schools