A credible online source is less likely to include

1. proven facts.

2. unproven opinions

3. the author's name.

4. the publication date.

The correct answer is 2. Unproven opinions

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.

2) as opinions should be left out of factual articles and credible sources