A student measures the mass of a sample multiple times and gets varying results: 5.01g, 5.03g, 4.98g, and 5.00g. What type of error is most likely affecting these measurements?

• A. Human error due to incorrect reading of the scale.
• B. Indeterminate error due to random fluctuations.
• C. Systematic error due to a calibration issue.
• D. Instrumental error due to a faulty scale.

Answer: (B)