input: OPTIONS:
- The introduction of 3-D printing technology by medical workers.
- The development of 3-D printing technology by engineers.
- The use of 3-D printing technology in saving a baby.
- The Potential of 3-D printing technology in surgery. Now, answer this question: Read the following article and answer the question. Article: One baby born with a defective windpipe now has hope of breathing normally thanks to 3-D printing technology, NPR reported. Garrett Peterson, now 18 months old, was born with tracheomalacia , leaving him unable to breathe. The condition terrified his parents, who turned to specialist Dr. Glenn Green at the University of Michigan for a possible treatment. Along with Scott Hollister, a biomedical engineer who runs the university's 3-D printing lab, Green designed a device that can hold open Garrett's windpipe until it's strong enough to function independently. After taking a CT scan of Garrett's windpipe to make a replica of it, they made the "splint" with a 3-D printer. "It's like a protective shell that goes on the outside of the windpipe, and it allows the windpipe to be tacked to the inside of that shell to open it up directly," Green told NPR. On January 31, Garrett had his surgery. Surgeon Dr. Richard Ohye opened up Garrett's chest and saw that his windpipe had completely collapsed and one of his lungs was completely white -- a condition Ohye had only seen in dead bodies. After eight hours of surgery and careful placement of a splint on either side of Garrett's windpipe, it was time for the big test: What would happen when they let air flow through the windpipe into Garrett's lungs? Though he still remains in the hospital, Garrett has gotten stronger and needs less assistance breathing in the weeks since his surgery. His parents are overjoyed, saying he's starting to act more interactive and alert. As Garrett grows, the splint will expand and eventually dissolve in his body as his own windpipe strengthens enough to work independently. 3-D printing technology has allowed doctors to help patients in ways that they hope will continue to grow. "We're talking about taking something like dust and converting it into body parts," Green said. "And we're able to do things that were never possible before." Question: What does the author mainly talk about in the passage? Answer:
A:
output: The use of 3-D printing technology in saving a baby.

input: OPTIONS:
- Guide them to a safer place.
- Remind drivers to drive slowly.
- Frighten them away from the road.
- Advise drivers to choose another way. Now, answer this question: Read the following article and answer the question. Article: Free energy is everywhere around us. There are many ways to make and collect energy from various sources like sun, wind and water. People also realize that everyday stuff can be a source of energy too. For example, riding a bike, running or just walking, etc. We simply have to change our way of thinking if we want to change the world. So comes the idea of solar roadways. Are they the road of future? Why use roads just for driving and collecting tolls ? Why don't we use them for collecting energy? The US Department of Transportation recently awarded $100,000 to Solar Roadways to build the first ever Solar Road Panel. So how do these future roads work? The Solar Road Panels will contain embedded LEDs which "paint" the road lines from beneath to provide safer nighttime driving as well as to give drivers instant instructions such as detour ahead. The road will be able to sense wildlife on the road and can warn drivers to "slow down". There will also be embedded heating elements in the surface to prevent snow and ice buildup, providing safer winter driving. Replacing asphalt roads and parking lots with Solar Roadway Panels will be a major step toward stopping climate change. Fully electric vehicles will be able to recharge along the roadway and in parking lots, finally making electric cars practical for long trips. We just can't wait to see more of these roads all over the world in the near future. Question: When some animals are on the solar road, what will the road do? Answer:
A:
output: Remind drivers to drive slowly.

input: OPTIONS:
- Consumer to consumer
- Produciiun to consumer
- Business to consumer
- Business to business Now, answer this question: Read the following article and answer the question. Article: Ahmad is the founder of Copia, which she describers as "match com meets Uber for food recovery." Conipanies use the Copia app to report when they have leftover food,what kind, and how much . When recipients such as shelters, soup kitchens , and agencies first register with Cupia, they indicate how many people they need to feed,on what days , and what kind of food they'll take. Cupia makes a profit from the fees that companies pay to remove leftever food; the companies receive a tax write-off for their food donations. How did Ahmad create Copia? Aa a senior at UC Berkeley, the found nearly 50 million Americans are at risk of going hungry every day, white more than 133 billion pounds ofeatable foud are deserted each year. Ahma d started a student group that recovered food from the campus and distributed it Lo local nonprofits. As rewarding as this was,the inefficiencies bothered her. One day , she got a call from the dining hall manager, who had 500 sandwiches left over from m event. She rented a car,loaded it with the food, and called nonprofits, She found takers for only 25 sandwiches and ended up giving out the rest eU a nearby park. "I remember thinking how cool it would be if people who had food could say, 'Hey, we have stuff, ' and people who needed it could speak up, and then we could connect the two. " After she graduated , Ahmad launched Copia carlier this year, it operates in 40 cities in Northem California and has served over 700,000 people. Its biggest success--and challenge-- 10 date was this past Super Bowl: Copia recovered muro than 14 tons of food, which fed more than 23,000 people. Despite her busy schedule, Ahmad tries to do me food pickup a week."When you get to theshelter,"she says ," If you wouldn't have eaten." And that's when I'm like, ' This is why I do what I do.' Question: What's a Copia's operating model? Answer:
A:
output:
Business to consumer