WORTH 20 POINTS PLEASE HELP!! Read this passage, looking for clues about its text structure.
Sloths are unique, intelligent, and endearing mammals. Cousins to anteaters, they belong to two biological families: the two-toed sloth to the Megalonychidae family and the three-toed sloth to the Bradypodidae family. They originate from the jungles of Central and South America, where they dwell in trees and live off of plant buds, shoots, and leaves. Sloths come by their name honestly: They are extremely slow moving creatures with low metabolic rates.
Why does the author use bold print in this article?
to indicate important but perhaps unfamiliar words
to stress the main ideas of the article
to show a topic change within the piece
to point out foreign terms