Ashort musical idea associated with a person, object, or thought, used by richard wagner in his operas, is called unending melody. leitmotif. speech-song. lied.

A short musical idea associated with a person, object, or thought, used by Richard Wagner in his operas, is called leitmotif.
It is a musical phrase that is usually very short, and appears constantly throughout an opera or something else each time a person associated with it appears on the scene. Richard Wagner used leitmotifs quite often, and they can especially be found in his Der Ring des Nibelungen.

Monophony.  hope this ! : )

Answer: (d) all the aboveexplanation:

the above mentioned statements talks about the creativity of an artist and to what extend they can utilize and experiment on the objects provided.   differing size and subjects are given so that an image of wisdom is created. displaying a transition from light to dark in something by darkening sections in order to create a shadow. and lastly, putting bits and pieces together to formulate a new image.