Question

Singer, Ming. Global Warming: How Your Car is Killing Wildlife Every Day. Boston: McMaster Brothers, 2013. Print.

Which quality of this source indicates that it is credible for an essay about the impacts of global warming?
A. It is a book.
B. It is about wildlife.
C. It is current.
D. It is a print source.

Answer 1

I'd say it is current.

The rest don't have much of an impact on credibility.

Answer 2

C. It is current.

Since global warming changes pretty frequently, currency on this topic would need to be absolutely on-point and within the last 5-10 years. Think of CRAAP for evaluating a source: Currency, Relevance, Authority, Accuracy, and Purpose. Obviously, currency is what’s being addressed in this question - the more current it is, the more credible. Currency = credibility. :)