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The following is the most acceptable method for revealing indented writing :

  • A.Oblique lighting
  • B.Intense lighting
  • C.Rubbing with a pencil lead
  • D.ESDA

Answer: D

The most acceptable method for revealing indented writing is ESDA, the electrostatic detection apparatus. It lifts the impressions onto a charged film and develops them with toner without harming the paper.

Oblique lighting and intense lighting are simple methods that can show deep impressions only. Rubbing with a pencil lead damages the document and is not acceptable for evidence. It is non-destructive and sensitive, so it can reveal impressions left on a page by writing on a sheet that was above it, even after the top sheet has gone, which makes it the accepted method.

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