The Wright brothers, Orville and Wilbur, were the first to invent and fly a heavier-than-air machine that was powered by its own engine. They made their first successful flight on December 17, 1903, at Kitty Hawk, North Carolina.
Thomas Edison was an American inventor and businessman, who has been described as America’s greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. He is best known for his invention of the electric light bulb.
Albert Hoffman was a Swiss chemist who first synthesized LSD in 1938. He was not aware of the hallucinogenic properties of the drug until 1943, when he accidentally ingested it while working in his laboratory.
Robert Louis Stevenson was a Scottish novelist, poet, essayist, and travel writer. He is best known for his novels Treasure Island, Kidnapped, and Strange Case of Dr Jekyll and Mr Hyde.
Therefore, the correct answer is B.