Answer and explanation

Correct answer: A. 800 g

  1. Step 1: 1 kg = 1000 g.
  2. Step 2: 0,8 × 1000 = 800 g.
Answer
800 g.
Why not the others: 80 g: 1 kg was taken as 100 g. 0,0008 g: the kilograms were divided instead of multiplied by 1000. 8000 g: an extra factor of 10 was applied.

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