The purpose of font formatting within a search log is to identify keywords, important information, and __________.

a supporting evidence
b Boolean operators
c credible sources
d search parameters

b Boolean operators

The purpose of font formatting within a search log is to identify keywords, important information, and supporting evidence.

The purpose of font formatting within a search log is to identify keywords, important information, and **a supporting evidence**.

Explanation:
Font formatting is commonly used in search logs to draw attention to certain words or phrases that are significant for various reasons. By using different fonts or styles, such as bold or italic, specific keywords can be highlighted. This helps users quickly identify and locate important information within the log.

In addition to keywords, font formatting can also be used to highlight supporting evidence. This refers to specific details or facts that support a particular claim or argument. By emphasizing these details, it becomes easier to distinguish them from the rest of the text and understand their relevance.

Therefore, the correct answer is "a supporting evidence."