The correct answer is 2. Unproven opinions
Step-by-step explanation:
An online source is credible if the information on it is supported through evidence, and therefore can be believed. Some of the factors that contribute to the credibility of sources are that you know the author, and he or she is an expert on the field; the source has been created or updated recently, which means you also know the publication date; and the source cites other sources or includes proven facts. This means a credible online source is less likely to include unproven opinions because these are not accepted in credible sources as information based on opinions cannot be proven, trusted or believed.