Our journey took us to a region called the Dragon 's Spine , located in a high and rugged mountain range . Long ago , the dominant Han Chinese drove several minority ethnic groups out of the surrounding low lands . These groups then built their communities in the mountains , transforming the steep hillsides into terraces so that they could grow rice and other crops .

pick from the following.
1). Learned how rice and crops are grown.
2). Walked up the hills in the mountains.
3). None of the above choices ..
4). Learned the history of the Areas they saw.
Answer the following question: What did they do on their tour ?
4).