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].

(CNN) Last Friday, a million Russian schoolchildren watched a televised address from Russian President Vladimir Putin. "Artificial intelligence is the future, not only of Russia, but of all of mankind," Putin said. "Whoever becomes the leader in this sphere will become the ruler of the world." After seeing Putin's comments, SpaceX and Tesla CEO Elon Musk tweeted that "competition for AI superiority at national level (is the) most likely cause of WW3." Though never before stated so frankly by a head of state, Putin's views on AI are increasingly shared by national security leaders in the United States, China and around the world. As I wrote in a report published by the Harvard Belfer Center for Science and International Affairs, AI research is likely to deliver a revolution in military technology on par with the invention of aircraft and nuclear weapons. In other words, Musk is correct that each country is pursuing AI superiority and that this pursuit brings new risks.Gregory C. Allen: Though Russia may not lead in AI technology, it is at the forefront of weaponizing itAs an authoritarian leader of a nation with a declining economy, Putin has every reason to employ AI to maintain power, writes Allen 
 Question:Today, _'s military robots and drones are remotely operated, but in the future Russia plans to field "intelligent robotic complexes," meaning robotic military units powered by AI systems that can fight and kill without need for a human operator.
Russian

A kind-hearted 12-year-old boy turned down a £20 reward for returning a lost mobile phone and instead told the owner to do 'something nice for someone else'. Josh Brown found an iPhone4 on a train seat and answered a call from the owner's mother after getting off at Birmingham on February 21. He told Michelle Hickinbottom, 36, that he would leave her 16-year-old daughter Shaunnah's phone at the ticket office at Selly Oak train station on his way home to Alvechurch, Worcestershire. Josh Brown (left) turned down a £20 reward after he found Shaunnah Hickinbottom's iPhone4 (right) on a trainJosh Brown found an iPhone4 on a train seat in Birmingham last monthHe told the owner's mother that he would leave it at station's ticket officeMichelle Hickinbottom had offered to post him reward if he left addressBut she was stunned to find heartwarming note along with the £250 phoneSo she launched social media campaign to track Josh down and thank him 
 Question:_ (pictured with daughter Shaunnah) said she was 'choked' when she read the letter.
Michelle Hickinbottom

A million homes in Morocco could soon be powered by a mega solar plant capable of providing energy at all hours of the day and night. Instead of using the standard photovoltaic solar cells, Ouarzazate's power station will use Concentrated Solar Power (CSP) - a technology that harnesses sunlight to melt salt and power a steam turbine. The plant, called Noor1, is expected to open next month and will be the first of four stations to be set up in the region. Once complete, the establishment will be the largest CSP farm in the world. The Ouarzazate plant is part of Morocco's strategy to produce 42 per cent of its energy from renewable sources by 2020 - a goal that has been praised by the UN.The Ouarzazate plant will be the biggest solar thermal plant in the worldIt will use a technology known as Concentrate Solar Power (CSP)CSP harnesses sunlight to melt salt and power a steam turbineMorocco plans to get 42 per cent of its energy from renewables by 2020 
 Question:While solar thermal power methods such as _ only work in very hot countries, solar energy at large is experiencing more widespread use worldwide as the photovoltaic panels' price is progressively falling.

Concentrated Solar Power