A person’s weight is measured as 79.3 kg - HSC - SSCE Mathematics Standard - Question 8 - 2019 - Paper 1

To determine the absolute error, we need to understand that it refers to the difference between the measured value and the true value. In this case, without additional context regarding the true weight, we generally assume a standard measurement accuracy for weights.

Since typical weighing scales have a potential error margin, we can evaluate given options based on common measurement practices. If the measured weight is 79.3 kg, plausible errors could range from inaccuracies in the scale, particularly noting human errors or device calibration issues. Given that the option 'B. 50 grams' might represent a realistic maximum expected error in measurement, this choice is the most reasonable.

Thus, the absolute error of this measurement could be reasonably interpreted as:

Answer: 50 grams