Final answer:
Relevance in information requires that it possess predictive value and confirmatory value. Information with both qualities is considered relevant because it not only helps predict future events but also confirms or corrects prior expectations, aiding in effective decision making. The correct option is c.
Step-by-step explanation:
The student has asked about the additional quality that information must possess to be considered relevant, besides having predictive value.
The options provided are neutrality, completeness, freedom from error, and confirmatory value. Among these, the quality that complements the predictive value to make information relevant is confirmatory value.
Confirmatory value supports the use of information to confirm or correct prior expectations. While predictive value helps in forecasting future events, confirmatory value assists in validating the predictions made.
Information that has both predictive and confirmatory value is useful for decision making, as it can be used to form expectations about the future and then later be used to assess the accuracy of those expectations. The correct option is c.