The WSJ business quiz showcases several major developments in the corporate landscape. Warren Buffett's successor made significant megadeals, while three top AI CEOs urged Congress about a looming threat. Trump ally Bill Pulte secured a new position despite lacking apparent qualifications, highlighting unusual personnel moves in the current business environment.

Educational institutions face technological disruption as one school provided all 10th and 11th graders with ChatGPT accounts. Meanwhile, more than 1,100 University of California STEM professors are making demands, reflecting growing tensions in academia over research funding and direction. These developments signal how technology is reshaping traditional educational structures.

Dolly Parton has expanded her business portfolio into a significant ownership area, while Hyperliquid gains prominence on Wall Street as a new trading platform. Across the Atlantic, traditionalists fight to preserve a venerable U.K. delicacy, showing how business interests intersect with cultural preservation efforts.