What does the objectivity of a test determine?

The objectivity of a test is primarily concerned with the impartiality and consistency of the results obtained, regardless of who administers the test. This means that if the same individual is tested multiple times, they should receive similar results regardless of who is conducting the test. In this context, option B correctly highlights that objectivity ensures that an athlete will yield similar results even when tested under different administrators.

This concept is crucial in sports testing, as it reflects the reliability of a measurement tool in assessing an athlete's performance. When a test is objective, it's less influenced by subjective factors, such as the demeanor or biases of the person administering the test, leading to a more standardized assessment of the athlete’s abilities.

Other options might hint at fairness, consistency across different athletes, or the influence of age, but they do not specifically address the key aspect of objectivity, which is the stability of results across various administrators holding the test environment constant. Therefore, the focus on the athlete receiving similar results under different administrators is central to understanding the implications of a test's objectivity in sports science and testing protocols.