16Hit1600
Expression of IdeasEasy–MediumNaming the inventor of a device

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - The safety pin was patented in 1849. - It was invented by Walter Hunt, a mechanic in New York. - Hunt sold the patent for $400. - The pin's coiled spring keeps it closed. The student wants to identify who invented the safety pin.

Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. The safety pin was invented by Walter Hunt, a New York mechanic, who patented it in 1849.Correct
  2. B. The safety pin was patented in 1849.
  3. C. The safety pin's coiled spring keeps it closed.
  4. D. The patent was sold for $400.

Answer: A. The safety pin was invented by Walter Hunt, a New York mechanic, who patented it in 1849.

The inventor.

Why the other answers are wrong

B. The safety pin was patented in 1849.
A date, no name.
C. The safety pin's coiled spring keeps it closed.
How it works.
D. The patent was sold for $400.
The sale, no name.

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