Which selection from the section "Slowing the Spread" BEST explains what epidemiologists mean by "flattening the curve"? Question 1 options:

All these decisions by public officials and businesses are aimed at one goal: slowing down the spread of the virus to avoid overburdening a health care system that doesn't have the infrastructure to handle a sudden surge of tens of thousands of cases at once.

But every indication is that the United States is on track to see the same exponential increase other countries are seeing, as scientist Mark Handley has been tracking on Twitter.

Epidemiologists study diseases and how they spread. They can somewhat predict how many cases of a disease are going to occur based on how the disease is behaving.

The only reason total U. S. cases aren't already skyrocketing is that coronavirus testing has been such a mess that too few people — just 77 by the Centers for Disease Control and Prevention (CDC) in the whole week of March 8 — are being tested. You can't count cases you haven't identified yet.

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.