What conventions did african benin artists use in their brass plaques to make the oba stand out? question 15 options: they inscribed the oba's teachings in low relief in the background of the plaque. they placed the oba in the center of the plaque and made him larger than the other figures. they carved the oba as a separate sculpture and attached him to the plaque when it was complete. they sculpted multiple obas in a variety of sizes, to symbolize his strength and influence.

They placed the oba in the center of the plaque and made him larger than the other figures.

Explanation:

The Oba of Benin is the traditional ruler of the Edo people. He was also the head of the Eweka dynasty of the Benin Empire. This title was extremely important in the culture of Benin, and it placed the leader in a position of unrivalled authority and power. This is shown by the brass plaques of the African Benin artists, which placed the oba in the center of the plaque and made him larger than other figures.