think about the five categories of features that distinguish a useful, credible source. if you found a book…

think about the five categories of features that distinguish a useful, credible source. if you found a book that is unbiased, well - researched by an expert, and full of useful facts, but its twenty years out of date, which criterion is missing?\npurpose and perspective\naccuracy\nrelevance\nauthority\ntimeframe

think about the five categories of features that distinguish a useful, credible source. if you found a book that is unbiased, well - researched by an expert, and full of useful facts, but its twenty years out of date, which criterion is missing?\npurpose and perspective\naccuracy\nrelevance\nauthority\ntimeframe

Answer

Brief Explanations:

The book is described as unbiased (related to purpose and perspective), well - researched by an expert (authority), and full of useful facts (accuracy). However, it is twenty years out of date, indicating a lack of currency which is related to the timeframe criterion for a credible source.

Answer:

Timeframe