Read the excerpt from the article "Past and Present Ships:" In contrast, people who want to explore other countries can take cruises.

Which of the following paraphrases this excerpt correctly?

Select one:
a. Cruises are great options for those wishing to travel to other countries.
b. One difference is people who want to explore other countries can take cruises.
c. Cruising is a popular choice for people who like to take vacations.
d. In contrast, people who want to travel to other countries can take cruises.