Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) American college student Otto Warmbier only intended to spend five days sightseeing in North Korea in 2016. Instead, he spent 17 months there in detention where his family believes he was tortured into a vegetative state. On Monday, less than a week after returning to the United States with severe brain damage, his family announced Warmbier had "completed his journey home." The 22-year-old died Monday afternoon in Cincinnati, Ohio, with his family at his side. "It would be easy at a moment like this to focus on all that we lost -- future time that won't be spent with a warm, engaging, brilliant young man whose curiosity and enthusiasm for life knew no bounds," his family said. "But we choose to focus on the time we were given to be with this remarkable person."Death leads tour group to end visits to North Korea for AmericansFamily, politicians blame North Korea for American college student's death 
 Question:Now, the assessment of risk for _ visiting North Korea has become too high."

American