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. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

Q: (CNN) Since the discovery of dark streaks on the slopes of Mars in 2011, astronomers have been excited about potential evidence of water beneath the surface of the red planet. If there are subsurface water flows on Mars, they could allow life -- even on a microbial level -- to exist as well. But further study of these recurring slope lineae, known as RSL, is revealing something else. Those dark streaks may be the result of granular flows like sand and dust, according to a study published Monday in the journal Nature Geoscience. The study is the product of a research team made up of representatives from the US Geological Survey, the Planetary Science Institute, the University of Arizona and Durham University in England.The flows correlate more with sand on active dunes rather than subsurface waterResearchers studied flows at 10 sites 
 Questions:Earth is the only analog we have for _, but Mars obviously behaves differently, the researchers said. (A) CNN (B) Mars (C) RSL (D) Nature Geoscience (E) US Geological Survey (F) Planetary Science Institute (G) University of Arizona (H) Durham University (I) England

A: (B)
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Q: (CNN) -- The Florida judge presiding over George Zimmerman's murder trial ruled Monday that jurors will be allowed to hear about marijuana found in Trayvon Martin's system the night he was fatally shot. Prosecutors argued the amount was so minimal that "we just don't know" what effect it had on Martin. They also accused the defense of trying to "backdoor some very negative character evidence" into the trial. But the defense said the amount found in Martin's system would have affected his judgment that night and is therefore relevant to the case. Judge Debra Nelson ruled she would allow the testimony about Martin's toxicology results in front of the jury and told the prosecutors they would be able to cross-examine the defense's witness and present rebuttal witnesses of their own.NEW: Judge allows presentation of Trayvon Martin's toxicology test that shows THC was in his systemNEW: Martin's father, Tracy, testifies about hearing 911 call, says he couldn't tell who it was screamingSeveral defense witnesses testify it was George Zimmerman calling for helpZimmerman is charged with second-degree murder for killing 17-year-old Martin 
 Questions:The man who trained _ how to fight also testified on Monday that the former neighborhood watch captain didn't know how to throw a punch after training for almost a year. (A) CNN (B) Florida (C) George Zimmerman (D) Trayvon Martin (E) Martin (F) Debra Nelson (G) THC (H) Tracy

A: (C)
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Q: Belgian doctors are planning to kill a perfectly healthy 24-year-old woman by euthanasia because she is suffering from 'suicidal thoughts'. It is estimated that five people a day in Belgium die with the assistance of doctors, ranging from those with terminal illness to others with chronic, but not life threatening ailments. Now, a woman, known only as the fictitious name Laura, has been told she qualifies for euthanasia, despite not having a terminal disease. The young woman spoke with Belgian newspaper De Morgen about her decision. She said she was convinced that she had to die since her childhood claiming 'life, that's not for me'.Laura, 24, does not suffer from any terminal disease or physical illnessShe told doctors who assessed her condition that 'life, that's not for me'Five people a day currently die with the assistance of medics in BelgiumNew figures show that euthanasia numbers have jumped by a third 
 Questions:The report raised new questions over _’s increasingly controversial 13-year-old euthanasia law, which has won wide acceptance from the medical establishment, and which now allows even children to be killed by doctors. (A) Belgian (B) Laura (C) De Morgen

A:
(A)
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