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A piece of paper is folded and cut as shown in below question figure. From the given answer figures, choose the option how it will appear when opened?

Three steps: a rectangle with a dotted diagonal fold line, the folded triangle with a second fold, and the folded piece with a small oval holding two circles cut near its edge

  • A.Opened sheet with three ovals, each holding two small circles, two at the top and one at the lower left
  • B.Opened sheet with four ovals, each holding two small circles, in a two by two grid
  • C.Opened sheet with two ovals, each holding two small circles, one at the top right and one at the bottom left
  • D.Opened sheet with two ovals, each holding two small circles, one at the upper right and one near the lower left corner

Answer: D

The official key is option (D). What was confirmed: the sheet is folded twice and the cut, a half-oval holding two small circles, is made at the folded edge, so unfolding joins the cut to its mirror copy into whole ovals. Option (A) shows three ovals and option (B) four, and neither fits the cut made in the figure, while (C) and (D) each show two ovals standing apart at opposite corners. What was not confirmed independently is the exact position and orientation that separates (C) from (D); those follow the printed key, and nothing contradicts it.

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