Final answer:
The scoring of multiple-choice tests is an objective process. Precision refers to the consistency of measurements, while accuracy indicates how close the measurements are to the correct value. Some measurements can be exact, while others have inherent uncertainty. Hence, option (a) is correct.
Step-by-step explanation:
The actual mechanical scoring of multiple-choice tests is very objective. Objective scoring means that the answers are measured against a predetermined correct answer without bias or personal feelings interfering, making it a clear-cut and consistent method. This is different from subjective measures, which rely on personal opinions and interpretations.
When it comes to measurements:
A set of measurements that is precise but inaccurate clusters close together but does not hit the target accurately.
A set of measurements that is both precise and accurate clusters close together and also hits the target accurately.
A set of measurements that is neither precise nor accurate is scattered, showing no consistency in accuracy or precision.
Questions that require measurements usually have some degree of uncertainty, although some can be determined exactly like the conversion of 3 kilograms to grams.