5scientists who study ancient cultures discovered much information about the mounds. they believe that mound a at etowah was reserved for the chief of the area. the chief of the town had his home on the mound. the other citizens of the town lived around this mound. the closer a person lived to mound a, the more significant he or she was in the society. mound a reaches about 60 feet high. it is also more than 300 square feet wide at its base. some scientists believe that every time a chief died, a new layer was added to mound. then, a new house was built on the top.

in paragraph 5 the word significant means
a) large.
b) elderly.
c) scholarly.
d) important.

Consider the text from "machu picchu: a city in the sky” and its central idea. informational text: every year, thousands of tourists come to peru to see machu picchu. to reach machu picchu, tourists can hike along the famous inca trail. the trail covers twenty-six miles. it winds through beautiful mountains, forests, and jungle. visitors can also take a bus or train ride up to the ruins. the train takes you past miles of farmland along the urubamba river valley. above are the andes mountains. the tops of the mountains are often covered with mist. then, the train goes up a mountain on a winding road. the road climbs almost 1,640 feet. other incan ruins can be seen beside the road. most are very small compared to the city ahead. central idea: tourists enjoy visiting machu picchu in the mountains of peru. what supporting detail is most important to include in a summary of this text? people can hike the inca trail or take a train or bus to reach machu picchu. when people travel to machu picchu, they see miles of surrounding farms. people are surprised by the mist on the peaks of the andes mountains. when people visit machu picchu, they sometimes see other smaller ruins.