In the excerpt below, which is the topic sentence?

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.

Why might a reader look for an idea that is restated? to craft a summary of the article to find the subheadings in the article to identify the article's main idea to locate the article's key support

The pilgrims are at in the beginning of the prologue.