Question

review the fourth paragraph.
however, the science that explains why some people love roller coasters may also explain why other people dont enjoy the experience at all. some scientists believe that certain peoples brains might contain more of a chemical that drives them to seek out thrills like roller coasters, bungee jumping, or rock climbing. people who have less of this chemical also have less of a desire to find the fastest roller coaster or the biggest, most stomach - churning drop. plus, studies suggest that thrill - seeking behavior declines after early adulthood. therefore, older adults may be less likely to look for things like roller coasters to give them a dose of excitement.
but for those seeking the eustress of a looping, swirling ride, there is no
what does the fourth paragraph do?
it explains why some people might not enjoy roller coasters.
it gives background information on the history of roller coasters.
it summarizes the authors main claim.
it explains why roller coasters are better than bungee jumping.

Explanation:

The paragraph discusses how brain - chemicals and age - related decline in thrill - seeking behavior can cause some people to not enjoy roller coasters.

Answer:

It explains why some people might not enjoy roller coasters.