How is Gabe coming along? (The Giver)

Which sentence best contrasts two things? a. air travel, like bus travel, is a fun way to get from one place to another. b. air travel is a fun and relatively easy way to get from place to place. c. both bus travel and air travel require substantial planning. d. air travel is much more expensive than bus travel.

Danny went for a long bike ride he covered at least forty miles

In the following conversation, which group discussion technique does emily most clearly show?