Fact 1: Sharpening an object causes that object to change shape. Fact 2: An object is an item in the real world. Given the two facts above, what does sharpening an item do?

Available choices:
--changes shape.
--alters smell.
--changes color.
--Relieve pain.
--focusing a lens.
--maintains shape.
--duplicate itself.
--lowered energy cost.
Answer:
changes shape