The option that is true of the digital scale would be A. the scale is both accurate and precise.
How is the scale accurate ?
The scale's reported weight of 9.998 kg is very close to the actual weight of 10 kg. The difference is only 0.002 kg, which is within the accepted rounding error for weighing objects to four decimal places. Therefore, the scale is accurate within the limitations of its precision.
While the scale might not be perfectly precise in its internal measurements, it does consistently round up the displayed weight to 10 kg. This means that repeated measurements would always give the same result of 10 kg, fulfilling the definition of precision.
The options for the question are:
A.the scale is both accurate and precise.
B.the scale is accurate but not precise.
C.the scale is precise but not accurate.
D.the scale is neither precise nor accurate.