"First, Secondly and Thirdly" is Transitional Phrase of...
O Sequence/Time
Pathos
O Space
O Conclusion

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.