Solution
Option 1 -> While AI benefits are mentioned, benefits themselves don't justify safety concerns - they're the positive side of AI.
Option 2 -> The passage explicitly states AI "if deployed incautiously, will have an adverse effect on the human race" and discusses "existential risk facing humanity" - this is the core reason for AI safety.
Option 3 -> The passage mentions "industrial robot revolution," not a sports revolution - this misrepresents the text.
Option 4 -> Though enormous investment is mentioned, the passage doesn't connect this to food security but rather to healthcare, work, education, and science.
Hence, Option 2 -> AI safety is critical because the passage emphasizes that incautious deployment could have adverse effects on humanity, potentially creating existential risks as AI may surpass human intellectual capacity. The open letter signed by Hawking and Musk, the call for kill switches in robotic design, and the focus on preventing potential problems while reaping benefits all point to the need for safety measures due to potential threats to human existence -> correct