Inventors and Scientific Discoveries

Gottlieb Daimler and Wilhelm Maybach built the first gasoline-powered motorcycle, the Reitwagen, in 1885.

Bartolomeo Cristofori invented the piano around 1700 in Florence, calling it the gravicembalo col piano e forte.

Richard Hoe invented the rotary printing press in 1843, which dramatically increased printing speed and efficiency.

King C. Gillette invented the safety razor with disposable blades in 1901, revolutionizing shaving. Einstein was a physicist, Walter Hunt invented the safety pin, and Libby developed radiocarbon dating - none are associated with razor technology.

Volvo introduced the three-point seatbelt in 1959, invented by Nils Bohlin. The company famously made the patent open for all manufacturers to save lives. Bell Labs worked on semiconductors, Moog developed electronic music synthesizers, and Laennec invented the stethoscope.

Margarete Steiff, a German seamstress, created the first teddy bears in the early 1900s after seeing a bear cub illustration. Samuel Morse invented the telegraph, Bell Labs developed transistors, and Stephanie Kwolek invented Kevlar fiber.

William Oughtred, an English mathematician, invented the slide rule in the 1620s based on logarithms developed by John Napier. Richard James invented the Slinky, JC Perrier was a French engineer, and Karl Elsener founded Victorinox (Swiss Army knives).

Alexander Graham Bell patented the telephone in 1876. Colt is associated with firearms, Talbot with early photography, and Margarete Steiff with teddy bears. Bell's work on voice transmission built on earlier experiments by Meucci and others.

David Bushnell built the Turtle in 1775, the first military submarine used during the American Revolutionary War. While earlier submersibles existed, Bushnell's Turtle was the first one-person combat submarine with a propeller. Bell Labs is a research institution, James Watt improved the steam engine, and William Oughtred invented the slide rule.

Correct option is (1).

 In 1890 the Dutch geneticist Hugo de Vries discovered Oenothera lamarckiana or the evening primrose of Lamarck, growing as a parkland-escape on an abandoned field near Hilversum. In this plant de Vries believed he had found evidence that Charles Darwin was wrong.

Correct option is (4).