Read this excerpt from "close encounters of the bear kind" by susan e. quinlan.

john has captured bears in traps made from 55-gallon drums. he's also darted some from the air. darting a bear from the open door of a helicopter-held in by just a seat belt or climbing harness-sounds challenging. but john says, "no, it's not if i have a good pilot. if i'm worried about the helicopter rotors getting too close to the treetops, then it is tough to focus. but if i trust the pilot, it's fairly simple. the more difficult part is following the bear afterward. it takes from three to eight minutes for the drug to take full effect. we have to keep close enough to watch the bear without making it panic. if the bear falls into water, then i have to get down right away and make sure its head stays up, so it doesn't drown."

john and his coworkers calmly close in on this sleeping bear. the beeping signal is now strong and fast. john spots a small hole in the snow that he figures may mark the den entrance. before moving in, he pulls a sleeping bag out of his pack. holding it in one hand, he advances. the blinding glare of spring sunlight glinting off the snow makes it tough to make out where the bear is in the hole. john crouches down, shades his eyes with his hands and puts his face close to peer inside. with a startled look, he pulls back and whips the sleeping bag over the hole. the black bear inside is not only awake; its head is right at the entrance. john hopes the sleeping bag will keep the den dark and the bear calm a bit longer. he carefully readies a drug-filled hypodermic needle mounted on a short stick. it will take good aim and a quick jab to poke the needle into the bear's shoulder muscle.

fortunately john has had practice, so this bear is drugged safely. he and his coworkers then measure the bear and the den. they return the bear to its sleeping hole after a half hour. occasionally, they don't return the bear. instead, they take it to an artificial den at the university of alaska, where other scientists can study its hibernation more easily.

which answer best summarizes this text?

a. john has many ways to catch bears. sometimes he goes to their dens. this time, the bear is awake. he has to calm it down by making the den dark. then he drugs it and takes measurements. he doesn’t take this bear to the university of alaska so scientists can study it.

b. john follows the beep from the bear’s radio collar to its den. hibernating bears are usually asleep. this bear surprises john because it is awake. it as the opening of the den. he covers the opening with a sleeping bag. he hopes this will calm the bear. he sticks the bear with a needle attached to a short stick. once the bear is drugged, his team takes measurements of the bear. hi does not take the bear back to the artificial den at the university of alaska.

c. john has multiple ways to catch bears. he uses traps, darts from the air, radio tracking collars. usually, hibernating bears are sleeping. this bear is awake and at the entrance of the den. john uses a sleeping bag to cover the opening and calm the bear. he is able to safely drug it. his team takes measurements. they return this bear to its den, but some are taken to the university of alaska for further study.

d. john has multiple ways to catch bears. he uses large drums as traps, shoots darts at them from the air, and tracks them to their dens using the signal from their radio collars. he prefers to work with pilots he trusts. usually, hibernating bears are sleeping. instead of sleeping, this bear is awake and at the entrance of the den. john uses a sleeping bag to cover the opening and calm the bear. he is able to stick the needle in the bear’s shoulder muscle. his team takes measurements. they return this bear to its den, but some are taken to the university of alaska for further study.\