Read the passage from Sugar Changed the World. We don't know exactly what Nina's grandfather's invention did, but as the story goes, he found a way to give raw beet sugar sparkling hues. People from Russia to the cafés of Vienna could now buy cheap and attractive sugar produced on European soil.

Serfs were much like slaves, since they had no choice about where they lived or worked. Yet Nina's grandfather made so much money from his invention that he was able to buy his freedom from his owner.

the correct answer is the following.

one of the groups i belong to is the boy scouts. this is a problem-solving group because it has tasks that we need to solve in order to other people in different activities such as the rescue of lost pets, or elder people in need.

the other group i belong to is kids pro environment, and is an information-sharing group that tries to create conscience about the risks and problems that generate pollution in our cities. we share information to other students and parents on the importance of keep our communities clean and our skies clear.