A report released by WWF-Australia to coincide with Endangered Species Day found habitat loss continues to be the key threatening process to the long-term survival of the koala and is being compounded by numerous other threats.'" The underlined portion of the sentence is an example of a/an A. quotation. B. description. C. citation. D. statistic.

A). Quotation.

Explanation:

Quotation in general terms is demonstrated as the repetition or restatement of an original expression into another work as a part for the purpose of enhancing the credibility of the specific claim or argument. These are indicated by the use of quotation marks as mentioned in the given sentence.

As per the question, the underlined portion of the given statement exemplify a 'quotation' as it justifies the above definition as it is indicated by the use of the quotation marks(") and restates the actual expression of a source('report released by WWF') into another work to establish the reliability of the claim('Australia to coincide with Endangered Species Day found habitat loss'). Therefore, option A is the correct answer.