3. How to check the accuracy of the weighing scale?
A. See to it that the arrow is pointed at zero when it is empty.
B. The arrow must be in zero if there is a food item on top of it.
C. The arrow must not be in zero when the weighing scale is empty.
D. Place the food item on top of it to see if the hand is pointed at zero
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Answer:
D.Place the food item on top of it to see if the hand is pointed at zero