Google has announced the winners of it 's Android Developer Challenge . Just glancing through some of the winning apps , there are some REALLY good ideas in there . The most noble app I saw was one that examines your commutes and the like and gives you suggestions on how to become more carbon neutral ( carpooling , transit alternatives , etc ) . The app that grabbed my attention the most is one that lets you take a picture of a product 's bar code while in the store , and it will compare the product 's price in various other stores .

Generate a question about the above context.
Why would Google pick the app they did ?
Choices: (I). They wanted to pick something entertaining .. (II). They wanted to pick something playful .. (III). They wanted to pick something traditional .. (IV). They wanted to pick something good for the environment ..