Final answer:
The noun that best refers to Solomon being the wisest of all kings is 'sage', which signifies someone famous for wisdom and sound judgment.
The correct answer is A.
Step-by-step explanation:
The noun that refers to Solomon being the wisest of all kings is sage. A sage is a profoundly wise person, especially a person famous for wisdom who is often regarded as being distinguished for wisdom and sound judgment. In many historical contexts, including the biblical era, sages were recognized for their wisdom, often within a philosophical or spiritual domain, which matches the description of Solomon's uniquely wise rule.
The other options, while related to wisdom and ruling, do not best capture the specific connotation of wisdom ascribed to Solomon. Philosophers seek wisdom but are not necessarily rulers, oracles provide divine insights or predictions, and a monarch is simply a ruler, which doesn't necessarily imply wisdom.