The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
Anna MOST LIKELY is studying wolves in the Chernobyl area, in Russia.
This is so because, on April 26, 1986, the Chernobyl nuclear power plant exploded, in one of the most tragic incidents with nuclear plants in the world. Radiation spread all over the region, affecting not only humans but the wildlife and the entire environment in that part of Russia.
That is why, Anna, a European scientist, is studying how wildlife recovers from environmental disasters such as the Chernobyl incident of 1986. She is doing so by radio tagging wolves and studying how they develop over time. Hope she can find answers about animals that do not develop correctly because of radiation exposure.