RELIGION
The agnostic religion of Greeks are full of myths. The Greek art manifests the fables and superstitions about nature, life and death and man’s daily life with their human-like Gods. The Greek artists focused on beauty and harmony in architecture, sculpture, painting, pottery, hand-made art pieces etc.
The Yoruba believed in many deities. Their art flourished in the shrines honoring their gods and ancestors. The Yoruba’s religion also influenced their architecture, masks, pottery, weaving, bead working and metalwork.
Though very different, religion has had a great impact on both these civilizations and their art.
I think the answer is B. Observing because normally when a child shares ideas verbally or through symbolic representation they often observe others.
The term that best completes the statement above would be "aria." It is a part of the opera wherein it expresses the music of the ensemble in such a way that it dictates the tone of the opera. It is usually accompanied by an instrument and it is not necessarily song by the opera singer.