Answer and explanation

Correct answer: B. 40 ml

  1. Step 1: 1 litre is 1,000 ml. Step 2. 0.04 x 1,000 = 40 ml. Answer: 40 ml. Why not the others: 4 ml: 1 litre was treated as 100 ml. 0.00004 ml: the value was divided instead of multiplied. 0.4 ml: 1 litre was treated as 10 ml.

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